v2.0-dev New unit tester

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Refer to, https://chatgpt.com/share/67777b01-30c4-8005-a78b-96378dbe0adb

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This has been added on v2.0-dev and v2.0-ast, which has been merged in

• Push AST Centralized parser to v2.0-dev #22
• V2.0 patch #28

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Link for it is: NextLanguage-Source/package/bulit-in/Debugger/unit-tests