bump-cask-pr: add arch-specific version support

[razvanazamfirei]

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I am splitting #15611 into separate PRs. The current PR should be mergeable by itself. Once done, I will open a PR for the bump command.

This pull request introduces significant updates to bump-cask-pr.rb as well as new class VersionParser.

Changes:

• bump-cask-pr has been refactored.
• bump-cask-pr should now accept --version-intel and --version-arm.
• cask/cask.rbi has been sorted and on_system_blocks_exist? was added.
• Additional tests added for bump-cask-pr.
• Typechecking added for all relevant methods.

[MikeMcQuaid]

Thanks, looking good so far, much easier to review!

[MikeMcQuaid]

Suggested change

	class VersionParser
	class Homebrew::BumpVersionParser

or similar. Feels like it should be:

• in Homebrew module
• reference Bump in the name

Also, don't put it in extend as it's not extending an existing class

[MikeMcQuaid]

Move this to its own test file

[MikeMcQuaid]

Looks good, thanks again @razvanazamfirei!