poc: gkg sdlc siphon

What does this MR do and why?

• siphon

• save

• definitions and references

• dependency query update

• feat: gkg poc

• feat(indexer): capture line ranges in call edges

• feat(indexer): capture line ranges in import edges

Related Issues

Testing

Performance Analysis

• This merge request does not introduce any performance regression. If a performance regression is expected, explain why.