feat: scope api for multiple lang sdks

[Peefy]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

Close #979

• feat: scope api for multiple lang sdks
• feat: impl AST index serializer

2. What is the scope of this PR (e.g. component or file name):

• kclvm/api/src/service/into.rs
• kclvm/api/src/service/service_impl.rs
• kclvm/ast/src/ast.rs
• kclvm/loader/src/lib.rs
• kclvm/spec/gpyrpc/gpyrpc.proto
• kclvm/sema/core/**

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

• kclvm/api/src/service/service_impl.rs

[zong-zhe]

LGTM

[coveralls]

Pull Request Test Coverage Report for Build 7625688121

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 87.787%

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Totals
Change from base Build 7580488427:	0.0%
Covered Lines:	2293
Relevant Lines:	2612

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 7625688127

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-15.4%) to 72.348%

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Totals
Change from base Build 7580488427:	-15.4%
Covered Lines:	43728
Relevant Lines:	60441

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💛 - Coveralls