Add timed cw and cw2 commands for SX1262 and LR1110

Support fractional seconds, guard active packet work, keep the MCU awake, and restore reception after carrier tests. Include regression coverage and independent-radio RF validation for the V4 and T1000-E.

.github/workflows/run-unit-tests.yml

@@ -87,6 +87,7 @@ jobs:
 
       - name: Verify temporary-radio timing and exact reply delivery
         run: |
+          python3 -B test/test_carrier_wave.py
           python3 -B test/test_radio_profile_cli.py
           python3 -B test/test_radio_profile_scan.py
           python3 -B test/test_repeater_radio_timing_integration.py