[1/N] CI refactor: introduce CI register.

[hnyls2002]

This PR:

• Introduce CI register
• Deprecate the lang tests.
• Move test_srt_backend.py into the new CI folder per_commit

[gemini-code-assist]

Summary of Changes

Hello @hnyls2002, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request initiates a refactoring of the CI system by introducing a new mechanism for registering and categorizing unit tests. It provides a Python module that uses Abstract Syntax Tree (AST) parsing to identify test classes and extract their associated CI configuration, such as required hardware backend, estimated execution time, and CI stage, through dedicated decorators. This change lays the groundwork for a more structured and automated CI pipeline, enabling dynamic test selection and execution based on defined metadata.

Highlights

• New CI Test Visitor Module: Introduces ut_visitor.py, a new Python module designed to parse test files and extract Continuous Integration (CI) related metadata using Abstract Syntax Tree (AST) traversal.
• Hardware Backend Enumeration: Defines a HWBackend enumeration (SKIP, CUDA, AMD) to categorize tests based on their required hardware execution environment.
• Decorator-based CI Registration: Implements placeholder decorators (skip_ci, register_cuda_ci, register_amd_ci) that will be used to mark test classes with specific CI configurations, including hardware requirements, estimated execution time, and CI stage.
• AST Parsing for CI Metadata: Utilizes Python's ast module within TestCaseVisitor to programmatically identify CustomTestCase classes and parse the arguments of their associated CI decorators, enabling automated collection of test metadata.

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[gemini-code-assist]

Code Review

This pull request introduces a new utility script for parsing CI test decorators from test files. The approach of using an AST visitor is solid. I've provided feedback on a few areas to improve robustness and correctness: fixing a typo, using dataclasses for data-holding classes to fix a bug and improve clarity, and refactoring the AST visiting and argument parsing logic to be more robust and readable.