#2338: Add a new check commandlet

[Hiepiscus]

This PR fixes #2338

Implemented changes:

• Added the new check commandlet.
• Added repository root detection based on the .git directory.
• Added validation for the existence of a .gitignore file in the repository root.
• Added validation for the required .gitignore rules: .* and !.gitignore
• Added automatic fixing of detected issues via --fix.
• Added tests for check commandlet

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Testing instructions

1. Create a new project that is not a Git repository and run ide check
2. verify that an issue is reported
3. Create a Git repository (e.g. git init) without a .gitignore file and run ide check
4. verify that an issue is reported
5. Run ide check --fix and verify that .gitignore is created containing .* and !.gitignore
6. Remove .* or !.gitignore from .gitignore and verify that the issue is detected.
7. Run ide check --fix and verify that the missing rule is added.

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Checklist for this PR

Make sure everything is checked before merging this PR. For further info please also see
our DoD.

• When running mvn clean test locally all tests pass and build is successful
• PR title is of the form #«issue-id»: «brief summary» (e.g. #921: fixed setup.bat and not feature/921 fixed setup.bat). If no issue ID exists, title only.
• PR top-level comment summaries what has been done and contains link to addressed issue(s)
• PR and issue(s) have suitable labels
• Issue is set to In Progress and assigned to you or there is no issue (might happen for very small PRs)
• You followed all coding conventions
• You have added the issue implemented by your PR in CHANGELOG.adoc unless issue is labelled
  with internal
• You have not changed any dependency in pom.xml files or otherwise if runtime dependencies changed, you have updated our LICENSE.asciidoc
• You have formulated clear instructions on how to test your contribution under "Testing instructions"

[coveralls]

Coverage Report for CI Build 32373870031

Coverage increased (+0.04%) to 72.987%

Details

• Coverage increased (+0.04%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 9 coverage regressions across 3 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

9 previously-covered lines in 3 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/tools/ide/commandlet/CommandletManagerImpl.java	7	92.02%
com/devonfw/tools/ide/git/GitContextImpl.java	1	38.99%
com/devonfw/tools/ide/tool/ide/IdeToolCommandlet.java	1	78.69%

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Coverage Stats

Relevant Lines:	17657
Covered Lines:	13438
Line Coverage:	76.11%
Relevant Branches:	7797
Covered Branches:	5140
Branch Coverage:	65.92%
Branches in Coverage %:	Yes
Coverage Strength:	3.23 hits per line

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💛 - Coveralls