feat: Add gradient-based gas optimization profiling to Soroban contract CI pipeline #764

Job	Run time
Accessibility Tests	21s
TypeScript Type Check	1m 3s
Conventional Commit Check	23s
NPM Audit (High/Critical)	1m 16s
Rust Clippy Lint	1m 1s
TypeScript Lint & Format	41s
k6 Load Test (contract)	2m 18s
TypeScript Tests (Sharded) (1)	1m 4s
TypeScript Tests (Sharded) (2)	1m 3s
Rust Format Check	15s
Rust Build	15s
Rust Tests	1m 11s
Bundle Size Check	1m 10s
k6 Load Test (billing)	2m 16s
Performance Budget Check	27s
Soroban Gas Profiling & Regression Gate	1m 23s
TypeScript Tests (Sharded) (3)	1m 4s
TypeScript Build	2m 34s
k6 Load Test (subscription)	3m 52s
SonarCloud Analysis	-1s
CI Complete	3s
Merge Protection Check	0s
	23m 39s

Provide feedback