feat(rotator): multiple rotors of any type, plus a CAT PTT hotkey

Settings -> Rotator is now a list like the amplifiers: add/remove rotors,
mix PstRotator / Rotator Genius / ARCO, and a Rotator Genius can drive both
its ports (one entry = two rotors). The compass gains a rotor selector, and
a per-rotor motorized-antenna flag so the boom/pattern paths show only for
the rotor carrying the Ultrabeam/SteppIR.

Also in this batch: a keyboard PTT hotkey (hold-to-talk or toggle, reusing
the audio PTT method with a CAT fallback), and TCI spot push to the
panadapter with click-to-fill of the callsign.

frontend/wailsjs/go/main/App.d.ts

@@ -469,7 +469,7 @@ export function GetRelayAuto():Promise<main.RelayAutoConfig>;
 
 export function GetRotatorHeading():Promise<main.RotatorHeading>;
 
-export function GetRotatorSettings():Promise<main.RotatorSettings>;
+export function GetRotators():Promise<Array<main.RotatorDevice>>;
 
 export function GetSPEStatus():Promise<spe.Status>;
 
@@ -707,6 +707,10 @@ export function PGXLSetFanMode(arg1:string):Promise<void>;
 
 export function PGXLSetOperate(arg1:boolean):Promise<void>;
 
+export function PTTHotkeyDown():Promise<void>;
+
+export function PTTHotkeyUp():Promise<void>;
+
 export function PickADIFMonitorFile():Promise<string>;
 
 export function PickAudioFolder():Promise<string>;
@@ -879,7 +883,7 @@ export function SaveQSLDefaults(arg1:main.QSLDefaults):Promise<void>;
 
 export function SaveRelayAuto(arg1:main.RelayAutoConfig):Promise<void>;
 
-export function SaveRotatorSettings(arg1:main.RotatorSettings):Promise<void>;
+export function SaveRotators(arg1:Array<main.RotatorDevice>):Promise<void>;
 
 export function SaveStationDevices(arg1:Array<main.StationDevice>):Promise<void>;
 
@@ -909,6 +913,8 @@ export function SendLogToDeveloper():Promise<void>;
 
 export function SendQSORecordingEmail(arg1:number):Promise<void>;
 
+export function SetActiveRotor(arg1:number):Promise<void>;
+
 export function SetAlertEmailTo(arg1:string):Promise<void>;
 
 export function SetCATFrequency(arg1:number):Promise<void>;
@@ -1011,7 +1017,7 @@ export function TestPTT(arg1:main.AudioSettings):Promise<void>;
 
 export function TestQRZUpload():Promise<string>;
 
-export function TestRotator(arg1:main.RotatorSettings):Promise<void>;
+export function TestRotatorDevice(arg1:main.RotatorDevice,arg2:number):Promise<void>;
 
 export function TestStationDevice(arg1:main.StationDevice):Promise<main.StationTestResult>;