feat(player): add ASR/YOLO overlays, zoom, and text rendering

- Add TTF text rendering for subtitles and YOLO labels
- Implement ASR subtitle display with background
- Add YOLO bbox rendering with class labels
- Add zoom in/out (+/-) and reset (Backquote)
- Add frame/time info display
- Fix YOLO metadata parsing for actual file format
- Add Shift+Arrow for 1-second seek

target/release/build/zmij-4716f460245c217b/output

@@ -0,0 +1,3 @@
+cargo:rerun-if-changed=build.rs
+cargo:rustc-check-cfg=cfg(exhaustive)
+cargo:rustc-check-cfg=cfg(zmij_no_select_unpredictable)