Erpcgen reimplementation in rust

[mmisik]

Pull request

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• bug
• feature

Describe the pull request

MVP for a new erpcgen implementation in Rust, utilizing PEG to both define the language and derive the parser. The new implementation currently supports code generation for Python, with more languages to come. Additionally, it removes the semantic checks responsibility from the generation layer, streamlining the process of supporting new languages.

The new implementation also uses Askama as a templating engine, enabling better debugging of the code generation.

Expected behavior

The new implementation should be able to generate valid Python shim code.

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