feat: Allow major or minor version lookup

[reneleonhardt]

Features

• goenv local system -> if system is installed, removes existing .go-env.version if it exists printing the previous version

  goenv: using system version instead of 1.22.3 now

• goenv local latest -> 1.22.3 (latest installed version)

• goenv local 1 -> 1.22.3 (latest installed major version)

• goenv local 22 -> 1.22.3 (latest installed minor version when combined with a major version)

• goenv local 1.22 -> 1.22.3 (latest installed minor version)

• goenv 1 assumes goenv local 1 if any of those single version identifiers are given

• That means new "virtual" commands goenv latest and goenv system

• goenv global supports the same version identifiers like local (both use goenv-version-file-write)

• Extracted new goenv installed command (leaving prefix unchanged for now)

• Offer all installed versions plus latest and system as completions

• Boost grep performance

• Allow Dependabot to update GitHub actions

Fixes

• Sort versions correctly (1.20.9 comes before 1.20.10), only in prefix and local for now (not inside versions yet)
• commands (and therefore completions) include plugins un-/install now (and all installed versions plus latest and system)
• Some test cases

TODO

• Rewrite prefix to use installed (logic needs to be changed)

[ChronosMasterOfAllTime]

@reneleonhardt I like the idea; please add test cases for the expected behaviors for this module. New features should have complimentary tests to validate expected functionality.

[reneleonhardt]

If you have time, try all new shiny features / version references to see if there are still problems. Maybe some commands shouldn't complete/allow version arguments? If found and disabled them only for goenv init --sh for now.