feat(uniast): add Repository.Path field

[AsterDY]

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en: Sometimes the "Repostory.id" may be changed bythe user, therefore we separate the repo path from it, to ensure LLM can know where the repo files are
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[Hoblovski]

Sometimes the "Repostory.id" may be changed bythe user,
Can we list some specific cases? Like writing AST to code?