Add Mica Alt support to Windows Terminal (#17650)

[Dashsouradeep]

Summary

This PR adds support for the Mica Alt theme in Windows Terminal as requested in #17650.

Changes

• The useMica setting now accepts both boolean (true/false) and string enums ("mica", "micaAlt", "none"), following the pattern of bellStyle
• C++ logic and settings parsing are updated to allow both existing and new values
• Associated schema, interface, and test changes are included for compatibility
• Fixed spelling dictionary to include micaAlt/MicaAlt

Testing

• Tested backward compatibility with boolean true/false
• Mica effect confirmed working locally

Fixes #17650

[Dashsouradeep]

@microsoft-github-policy-service agree

[github-actions]

@check-spelling-bot Report

⚠️ Dictionary not found

Problems were encountered retrieving check dictionaries (cspell:dart/src/dart.txt cspell:fullstack/dict/fullstack.txt cspell:redis/dict/redis.txt cspell:dotnet/dict/dotnet.txt cspell:cpp/src/compiler-clang-attributes.txt cspell:python/src/common/extra.txt cspell:python/src/additional_words.txt cspell:cpp/src/stdlib-c.txt cspell:docker/src/docker-words.txt cspell:lua/dict/lua.txt cspell:typescript/dict/typescript.txt cspell:python/src/python/python-lib.txt cspell:cpp/src/stdlib-cmath.txt cspell:npm/dict/npm.txt cspell:powershell/dict/powershell.txt cspell:cpp/src/ecosystem.txt cspell:css/dict/css.txt cspell:latex/dict/latex.txt cspell:python/src/python/python.txt cspell:cpp/src/stdlib-cpp.txt cspell:cpp/src/stdlib-cerrno.txt cspell:shell/dict/shell-all-words.txt cspell:rust/dict/rust.txt cspell:svelte/dict/svelte.txt cspell:software-terms/dict/webServices.txt cspell:monkeyc/src/monkeyc_keywords.txt cspell:swift/src/swift.txt cspell:scala/dict/scala.txt cspell:java/src/java-terms.txt cspell:sql/src/sql.txt cspell:cpp/src/lang-jargon.txt cspell:public-licenses/src/additional-licenses.txt cspell:java/src/java.txt cspell:cpp/src/compiler-gcc.txt cspell:sql/src/tsql.txt cspell:node/dict/node.txt cspell:clojure/src/clojure.txt cspell:cpp/src/template-strings.txt cspell:gaming-terms/dict/gaming-terms.txt cspell:haskell/dict/haskell.txt cspell:ruby/dict/ruby.txt cspell:html/dict/html.txt cspell:php/dict/php.txt cspell:k8s/dict/k8s.txt cspell:public-licenses/src/generated/public-licenses.txt cspell:cpp/src/people.txt cspell:r/src/r.txt cspell:elixir/dict/elixir.txt cspell:software-terms/dict/softwareTerms.txt cspell:golang/dict/go.txt cspell:django/dict/django.txt cspell:cpp/src/lang-keywords.txt cspell:cpp/src/compiler-msvc.txt cspell:ada/dict/ada.txt).

⚠️ For more information, see check-dictionary-not-found.

🔴 Please review

See the 📂 files view, the 📜action log, 👼 SARIF report, or 📝 job summary for details.

❌ Errors and Warnings	Count
⚠️ check-dictionary-not-found	54
❌ forbidden-pattern	2
⚠️ ignored-expect-variant	1

See ❌ Event descriptions for more information.

These words are not needed and should be removed

Alt mica

Available 📚 dictionaries could cover words (expected and unrecognized) not in the 📘 dictionary

This includes both expected items (2013) from .github/actions/spelling/expect/alphabet.txt .github/actions/spelling/expect/expect.txt .github/actions/spelling/expect/web.txt

Dictionary	Entries	Covers	Uniquely
cspell:csharp/csharp.txt	32	2	2
cspell:aws/aws.txt	232	2	2
cspell:fonts/fonts.txt	536	1	1

Consider adding to the extra_dictionaries array (in the .github/actions/spelling/config.json file):

    "cspell:csharp/csharp.txt",
    "cspell:aws/aws.txt",
    "cspell:fonts/fonts.txt",

To stop checking additional dictionaries, put (in the .github/actions/spelling/config.json file):

"check_extra_dictionaries": []

✏️ Contributor please read this

By default the command suggestion will generate a file named based on your commit. That's generally ok as long as you add the file to your commit. Someone can reorganize it later.

If the listed items are:

• ... misspelled, then please correct them instead of using the command.
• ... names, please add them to .github/actions/spelling/allow/names.txt.
• ... APIs, you can add them to a file in .github/actions/spelling/allow/.
• ... just things you're using, please add them to an appropriate file in .github/actions/spelling/expect/.
• ... tokens you only need in one place and shouldn't generally be used, you can add an item in an appropriate file in .github/actions/spelling/patterns/.

See the README.md in each directory for more information.

🔬 You can test your commits without appending to a PR by creating a new branch with that extra change and pushing it to your fork. The check-spelling action will run in response to your push -- it doesn't require an open pull request. By using such a branch, you can limit the number of typos your peers see you make. 😉

If the flagged items are 🤯 false positives

If items relate to a ...

• binary file (or some other file you wouldn't want to check at all).

  Please add a file path to the excludes.txt file matching the containing file.

  File paths are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your files.

  ^ refers to the file's path from the root of the repository, so ^README\.md$ would exclude README.md (on whichever branch you're using).

• well-formed pattern.

  If you can write a pattern that would match it,
  try adding it to the patterns.txt file.

  Patterns are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your lines.

  Note that patterns can't match multiline strings.

[DHowett]

this pull request seems to have many unintentional changes. please fix them.

do you have any screenshots of this Mica Alt working?

[DHowett]

hmm, why'd you delete this?

[Dashsouradeep]

.vscode/launch.json — I never meant to change this, it got included accidentally
TerminalSelection.cpp — never touched this file intentionally, somehow it got modified
Line endings in Theme.idl and ThemeTests.cpp — when I converted CRLF→LF I changed every single line, making the diff huge and messy...
Will be fixing these things ASAP..
( Please do not mind..I am new to OpenSource..but I am trying my best )

and lcurrently I am building the soln..to have a screenshot of micaAlt working...

[DHowett]

no, this is correct English

[DHowett]

We cannot accept this file with changed line endings.

[DHowett]

line endings are still broken