Add support for prettier.config.mts / prettier.config.ts

[UTGuy]

Preflight Checklist

• I have searched existing issues and this is not a duplicate
• This is a feature for the VS Code extension, not for Prettier's formatting behavior

Problem Description

currently you only support .mjs and .js

Proposed Solution

see: https://prettier.io/docs/configuration
Add support for prettier.config.mts and prettier.config.ts

Alternatives Considered

No response

Additional Context

The extension doesn't seem to pick up changes even to a prettier.config.mjs unless you reload the extension

No response