[sqlite] Implement C++ methods for thread activity

Summary:
This implements the sqlite operations for thread activity in C++

Depends on D11579

Test Plan: flow check. Ran the thread-activity-queries.test.js successfully

Reviewers: kamil, atul, ginsu

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D11581