perf(geekbench): add reusable helpers for progress, parsing, and CSV outputs

- Add POSIX-safe progress runner (fifo + heartbeat) without PIPESTATUS
- Add summary/workload parsers and CSV init/append helpers
- Add Geekbench bin resolver + unlock helper
- Keep helpers self-contained for reuse by Geekbench runner

Signed-off-by: Srikanth Muppandam <smuppand@qti.qualcomm.com>

Author: smuppand