feat: rust profiling with flamegraph, tokio console and custom tracing

[fayekelmith]

Ran RUST_LOG=info cargo run --release -p standalone --features neo4j and got the following results for the most expensive part in code add_calls
function calls section for ingesting stakwork/gitsee and got this

2025-12-25T17:18:39.332500Z  INFO finalize_graph{files=64}: [perf][call_finder] Analyzed 1083 function calls in 0ms
2025-12-25T17:18:39.332510Z  INFO finalize_graph{files=64}: [perf][call_finder]   • only_one: 305 hits (0ms, 0%)
2025-12-25T17:18:39.332552Z  INFO finalize_graph{files=64}: [perf][call_finder]   • same_file: 4 hits (0ms, 0%)
2025-12-25T17:18:39.332560Z  INFO finalize_graph{files=64}: [perf][call_finder]   • not_found: 774 hits (0ms, 0%)
2025-12-25T17:18:39.332566Z  INFO finalize_graph{files=64}: [perf][imports] Parsed 1083 files (28 unique) in 3827ms
2025-12-25T17:18:39.332587Z  INFO finalize_graph{files=64}: [perf][imports]   • index.ts: 158× calls, 626ms (16%)
2025-12-25T17:18:39.332682Z  INFO finalize_graph{files=64}: [perf][imports]   • handler.ts: 179× calls, 619ms (16%)
2025-12-25T17:18:39.332711Z  INFO finalize_graph{files=64}: [perf][imports]   • concepts.ts: 54× calls, 418ms (10%)
2025-12-25T17:18:39.332754Z  INFO finalize_graph{files=64}: [perf][imports]   • repo-cloner.ts: 63× calls, 237ms (6%)
2025-12-25T17:18:39.332766Z  INFO finalize_graph{files=64}: [perf][imports]   • FileStore.ts: 56× calls, 198ms (5%)