- Optimized tilt counting data by reducing the tilt counter variables into one for smaller memory footprint. So the `relay_chn_tilt_counter_t` type is replaced by a single `uint16_t` variable in the `relay_chn_tilt_ctl_t` structure. Hence the `relay_chn_tilt_counter_t` type has been removed since it is not necessary anymore.
- Refactored tilt count handling in NVS: consolidate forward and reverse counts into a single tilt count parameter.
- Updated NVS test files that affected by the data type and function signature changes.
Fixes #1079
