1943: Create Ruby commandlet

[laert-ll]

This PR fixes #1943

Implemented changes:

• Added Ruby commandlet.
• Added CHANGELOG.adoc.

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Testing instructions

1. Run the Ruby UrlUpdater.
2. Verify that running ide ruby installs ruby successfully and starts it sucessfully.
3. Verify that running ide uninstall ruby uninstalls it sucessfully.

Note: this PR also contains commits from the Ruby UrlUpdater PR as well in order to properly test that Ruby can be downloaded. It should be merged first, and then this one will follow.

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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). If no issue ID exists, title only.
• PR top-level comment summarizes 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 labeled
  with internal
• You have formulated clear instructions on how to test your contribution under "Testing instructions"

Checklist for tool commandlets

Have you added a new «tool» as commandlet? There are the following additional checks:

• The tool can be installed automatically (during setup via settings) or via the commandlet call
• The tool is isolated in its IDEasy project, see Sandbox Principle
• The new tool is added to the table of tools in LICENSE.asciidoc
• The new commandlet is a command-wrapper for «tool»
• Proper help texts for all supported languages are added here
• The new commandlet installs potential dependencies automatically
• The variables «TOOL»_VERSION and «TOOL»_EDITION are honored by your commandlet
• The new commandlet is tested on all platforms it is available for or tested on all platforms that are in scope of the linked issue

[coveralls]

Coverage Report for CI Build 29005442838

Coverage increased (+0.04%) to 72.216%

Details

• Coverage increased (+0.04%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 20 coverage regressions across 2 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

20 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/tools/ide/url/updater/UpdateManager.java	13	0.0%
com/devonfw/tools/ide/commandlet/CommandletManagerImpl.java	7	91.83%

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Coverage Stats

Relevant Lines:	16730
Covered Lines:	12589
Line Coverage:	75.25%
Relevant Branches:	7464
Covered Branches:	4883
Branch Coverage:	65.42%
Branches in Coverage %:	Yes
Coverage Strength:	3.18 hits per line

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💛 - Coveralls