feat: implement initial cyborg multi-action button mappings

- Added support for Single, Long, and Double press actions in libazeron.
- Mapped Cyborg surgical command IDs (0x20F6, 0x20F8, 0x204A).
- Updated azeron-cli to support --long and --double mapping flags.
- Updated protocol documentation with newly discovered Cyborg commands.
- Added TODO.md for remaining joystick and timing tasks.

libazeron/azeron.h

@@ -44,6 +44,13 @@ enum azeron_button_type {
     AZERON_BTN_LAYER_SWITCH,
 };
 
+/* Button action types (for Cyborg model) */
+enum azeron_action_type {
+    AZERON_ACTION_SINGLE = 0,
+    AZERON_ACTION_LONG,
+    AZERON_ACTION_DOUBLE,
+};
+
 /* Analog stick modes */
 enum azeron_stick_mode {
     AZERON_STICK_ANALOG = 0,
@@ -67,6 +74,7 @@ struct azeron_device_info {
 /* Button mapping */
 struct azeron_button_mapping {
     uint8_t button_id;
+    enum azeron_action_type action;
     enum azeron_button_type type;
     uint16_t key_code;  /* Linux input event code */
     char *macro;        /* For macro type */