GitLab

- Add hqc.gto.solver: High-level HF solver with optimized interface
- Add hqc.gto.integral: Fully vectorized Gaussian integral evaluation
- Add hqc.gto.scf: SCF iteration with DIIS acceleration
- Add hqc.gto.gto: Atomic orbital evaluation
- Add hqc.gto.boys: Boys function implementation
- Performance: ~93,000x speedup with JIT compilation
- Optimized for geometry optimization and molecular dynamics
- Update README with hqc.gto usage examples
- Add comprehensive test suite (13 tests passing)