Use a single syntax for custom rules

[deemp]

• Use a single syntax for Phi and Meta Phi
• Update and run tests for user-defined rules
• Add CLI
• Update README

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PR-Codex overview

Focus of this PR:

This PR focuses on making changes to the eo-phi-normalizer codebase, including deleting unnecessary files, adding new dependencies, and making modifications to existing files.

Detailed summary:

• Deleted several files related to the old syntax and rules in the eo-phi-normalizer/grammar and eo-phi-normalizer/src/Language/EO/Phi/Rules/Syntax directories.
• Added the optparse-generic dependency to the eo-phi-normalizer/package.yaml file.
• Made changes to the eo-phi-normalizer/src/Language/EO/Phi/Normalize.hs file, including adding a new pattern match and modifying existing code.
• Added new tests to the eo-phi-normalizer/test/eo/phi/rules/yegor.yaml file.
• Made changes to the eo-phi-normalizer/test/Test/EO/Phi.hs file, including renaming a function and modifying existing code.
• Added new code to the eo-phi-normalizer/test/Test/EO/Yaml.hs file.
• Made changes to the eo-phi-normalizer/eo-phi-normalizer.cabal file, including modifying dependencies and adding new modules.
• Made changes to the eo-phi-normalizer/Setup.hs file, including modifying the postConf function.
• Added new code to the eo-phi-normalizer/test/Language/EO/YamlSpec.hs file.
• Made changes to the eo-phi-normalizer/src/Language/EO/Phi/Syntax/Abs.hs file, including adding new data types and modifying existing code.
• Removed the IsString instance from the eo-phi-normalizer/src/Language/EO/Phi/Syntax.hs file.
• Added new code to the eo-phi-normalizer/test/Language/EO/PhiSpec.hs file.
• Made changes to the eo-phi-normalizer/grammar/EO/Phi/Syntax.cf file, including adding a new token definition.
• Made changes to the eo-phi-normalizer/src/Language/EO/Phi/Syntax/Par.y file

The following files were skipped due to too many changes: eo-phi-normalizer/src/Language/EO/Phi/Syntax/Doc.txt, eo-phi-normalizer/src/Language/EO/Phi/Rules/Common.hs, eo-phi-normalizer/app/Main.hs, eo-phi-normalizer/src/Language/EO/Phi/Syntax/Print.hs, eo-phi-normalizer/src/Language/EO/Phi/Rules/Yaml.hs

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[fizruk]

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[deemp]

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