Add pyresample, trollimage, trollsift and pykdtree to show_versions defaults

[khlaifiabilel]

Adds the four Pytroll packages requested in #3116 to the default package list of satpy.utils.show_versions, so check_satpy() output includes them.

Happy to also add pycoast, pydecorate, and geotiepoints here if desired - they were floated in the issue but not confirmed.

• Closes Add additional dependencies to show_versions and check_satpy #3116
• Tests added - existing show_versions/check_satpy tests already exercise the default list
• Add your name to AUTHORS.md if not there already

[Copilot]

Pull request overview

Updates Satpy’s environment diagnostics so satpy.utils.show_versions() (and therefore check_satpy()) reports additional common Pytroll dependencies by default, aligning the output with expectations from issue #3116.

Changes:

• Add pyresample, trollimage, trollsift, and pykdtree to the default show_versions package list.
• Add a new contributor entry to AUTHORS.md.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
satpy/utils.py	Extends the default dependency list printed by show_versions/check_satpy to include additional Pytroll packages.
AUTHORS.md	Adds the contributor requested by the PR checklist.

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[djhoese]

Duplicate of #3426

[khlaifiabilel]

Apologies for the noise - I missed that #3426 already covered this. Thanks for the quick triage!