add v2 phox counter modes support

documentation/SubGHzCounterMode.md

@@ -129,6 +129,24 @@ CounterMode: 1
 
 ---
 
+### 5. V2 Phoenix (Phox)
+
+**Mode 0 (Default):**
+- Standard - acts like regular remote
+- Uses rolling counter multiplier from global settings (default +1)
+- Counter increments based on the multiplier value (default +1)
+- Resets to 0 when overflow occurs (> 0xFFFF)
+
+**Mode 1 (ofex like):**
+- Counter sequence: `0x0000 / 0x0001 / 0xFFFE / 0xFFFF`
+- Verified as working
+
+**Mode 2 (0 - 4):**
+- Counter sequence: `0x0000 / 0x0001 / 0x0002 / 0x0003 / 0x0004`
+- Might work (let us know!)
+
+---
+
 ## Notes and Warnings
 
 ### Important Considerations: