Aliases for --lang.

[xonx4l]

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Issue-: #445

Aliases for --lang.

Added the from_string_or_alias function to handle both full language names and their aliases.

Summary by CodeRabbit

• New Features

  • Introduced a new method for creating PatternLanguage instances from string names and optional flavors, enhancing language identification flexibility.

• Improvements

  • Updated existing methods to utilize the new method, streamlining the logic for language identification and improving maintainability.
  • Enhanced language pattern determination in the CLI by allowing for more flexible handling of language aliases and string representations.
  • Added support for additional programming languages with new pattern aliases, improving the robustness of language recognition.