[env-version] added version command with envversion

[ollieatkinson]

Resolves #383

Short description 📝

tuistenv does not report it's version which makes it hard to determine which version clients are on when bugs are raised.

Solution 📦

add envversion command to tuist so that it's easy to identify the version

[codecov]

Codecov Report

Merging #399 into master will decrease coverage by 0.15%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #399      +/-   ##
==========================================
- Coverage   92.29%   92.13%   -0.16%     
==========================================
  Files         291      292       +1     
  Lines       14711    14623      -88     
==========================================
- Hits        13577    13473     -104     
- Misses       1134     1150      +16

Impacted Files	Coverage Δ
Sources/TuistEnvKit/Commands/CommandRegistry.swift	70.45% <0%> (-1.64%)	⬇️
Sources/TuistEnvKit/Commands/VersionCommand.swift	0% <0%> (ø)
Sources/TuistKit/Embed/XcodeBuild.swift	18.6% <0%> (-15.44%)	⬇️
Sources/TuistCoreTesting/Utils/MockSystem.swift	81.66% <0%> (-5%)	⬇️
Sources/TuistKit/Embed/FrameworkEmbedder.swift	79.22% <0%> (-3.01%)	⬇️
Sources/TuistGenerator/Graph/Graph.swift	95.31% <0%> (-0.43%)	⬇️
...stGenerator/Settings/DefaultSettingsProvider.swift	100% <0%> (ø)	⬆️
...rTests/Settings/DefaultSettingsProviderTests.swift	100% <0%> (ø)	⬆️
Sources/TuistGenerator/Models/Settings.swift	100% <0%> (ø)	⬆️
...s/TuistKitTests/Embed/FrameworkEmbedderTests.swift	100% <0%> (ø)	⬆️
... and 1 more

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[tuistbot]

	1 Warning
⚠️	Have you introduced any user-facing changes? If so, please take some time to update the documentation. Keeping the documentation up to date makes it easier for users to learn how to use Tuist.

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