refac: move profiling queries to proto messages

[AdityaHegde]

We moved to using connectrpc but kept the old orval types for reqesut/response. This PR migrated just the profiling queries to directly use proto messages instead of using fromJSON and toJSON

Checklist:

• Covered by tests
• Ran it and it works as intended
• Reviewed the diff before requesting a review
• Checked for unhandled edge cases
• Linked the issues it closes
• Checked if the docs need to be updated. If so, create a separate Linear DOCS issue
• Intend to cherry-pick into the release branch
• I'm proud of this work!

[nishantmonu51]

@AdityaHegde : Dow e also expect any performance improvements from this change ?

[AdityaHegde]

@nishantmonu51 Not too much, we are converting json <=> proto for all these APIs, so that is the only advantage. The big advantage is types are not needed and we can use proto messages directly.