Suport device-open-app command

Summary: It is an escape hatch for testing iOS Sample app if `navigate('/')` cannot be made to work easily (D51394323)

Reviewed By: lblasa

Differential Revision: D51466697

fbshipit-source-id: fd6c2f37504807b4b634b85cb10e837523dadba8

desktop/flipper-server-core/src/FlipperServerImpl.tsx

@@ -365,6 +365,9 @@ export class FlipperServerImpl implements FlipperServer {
     'device-install-app': async (serial, bundlePath) => {
       return this.devices.get(serial)?.installApp(bundlePath);
     },
+    'device-open-app': async (serial, name) => {
+      return this.devices.get(serial)?.openApp(name);
+    },
     'get-server-state': async () => ({
       state: this.state,
       error: this.stateError,

desktop/flipper-server-core/src/devices/ServerDevice.tsx

@@ -82,4 +82,8 @@ export abstract class ServerDevice {
   async installApp(_appBundlePath: string): Promise<void> {
     throw new Error('installApp not implemented');
   }
+
+  async openApp(_name: string): Promise<void> {
+    throw new Error('openApp not implemented');
+  }
 }

desktop/flipper-server-core/src/devices/ios/IOSBridge.tsx

@@ -63,6 +63,7 @@ export interface IOSBridge {
     ipaPath: string,
     tempPath: string,
   ) => Promise<void>;
+  openApp: (serial: string, name: string) => Promise<void>;
   getInstalledApps: (serial: string) => Promise<IOSInstalledAppDescriptor[]>;
   ls: (serial: string, appBundleId: string, path: string) => Promise<string[]>;
   pull: (
@@ -149,6 +150,11 @@ export class IDBBridge implements IOSBridge {
     await this._execIdb(`install ${ipaPath} --udid ${serial}`);
   }
 
+  async openApp(serial: string, name: string): Promise<void> {
+    console.log(`Opening app via IDB ${name} ${serial}`);
+    await this._execIdb(`launch ${name} --udid ${serial} -f`);
+  }
+
   async getActiveDevices(bootedOnly: boolean): Promise<DeviceTarget[]> {
     return iosUtil
       .targets(this.idbPath, this.enablePhysicalDevices, bootedOnly)
@@ -217,6 +223,10 @@ export class SimctlBridge implements IOSBridge {
     );
   }
 
+  async openApp(): Promise<void> {
+    throw new Error('openApp is not implemented for SimctlBridge');
+  }
+
   async installApp(
     serial: string,
     ipaPath: string,

desktop/flipper-server-core/src/devices/ios/IOSDevice.tsx

@@ -140,6 +140,10 @@ export default class IOSDevice
     );
   }
 
+  async openApp(name: string): Promise<void> {
+    return this.iOSBridge.openApp(this.serial, name);
+  }
+
   async readFlipperFolderForAllApps(): Promise<DeviceDebugData[]> {
     console.debug('IOSDevice.readFlipperFolderForAllApps', this.info.serial);
     const installedApps = await this.iOSBridge.getInstalledApps(