Update Lint/Void to recognize more nonmutating methods

[vlad-pisanov]

Update Lint/Void to recognize more nonmutating methods when the CheckForMethodsWithNoSideEffects option is used.

This PR adds one (now)-native transform_keys method, and about a dozen common ActiveSupport methods such as stringify_keys, compact_blank and squish.

The ActiveSupport methods are only recognized when AllCops/ActiveSupportExtensionsEnabled: true (such as in a Rails project)

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Before submitting the PR make sure the following are checked:

• The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
• Wrote good commit messages.
• Commit message starts with [Fix #issue-number] (if the related issue exists).
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• Squashed related commits together.
• Added tests.
• Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
• Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.

[vlad-pisanov]

added filter and transform_keys

[koic]

The goal seems reasonable, but it might be preferable to adjust the approach slightly. Instead of using ActiveSupportExtensionsEnabled, it might be better to provide a user config parameter like NonmutatingMethods. (There might be a better name than NonmutatingMethods.)
After that, In RuboCop Rails, configure NonmutatingMethods as follows:

# config/default.yml in the RuboCop Rails
NonmutatingMethods:
  - compact_blank
  - deep_merge
  - deep_stringify_keys
  - ...

This approach allows for the elimination of the NONMUTATING_ACTIVE_SUPPORT_METHODS_WITH_BANG_VERSION constant, ensuring that changes in Active Support do not have an impact.