Export client logs for the active client as a part of the universal export

Summary:
Design doc: https://docs.google.com/document/d/1HLCFl46RfqG0o1mSt8SWrwf_HMfOCRg_oENioc1rkvQ/edit#

Introduce a command rto fetch debug data from the devices

Reviewed By: passy

Differential Revision: D40470838

fbshipit-source-id: 40a7ec66b1266ceff1b31b5b4f19b93765b78615

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

@@ -419,6 +419,10 @@ export class FlipperServerImpl implements FlipperServer {
     'device-clear-logs': async (serial) => this.getDevice(serial).clearLogs(),
     'device-navigate': async (serial, loc) =>
       this.getDevice(serial).navigateToLocation(loc),
+    'fetch-debug-data': async () => {
+      // TODO: Implement fetching client logs from all devices
+      return [];
+    },
     'metro-command': async (serial: string, command: string) => {
       const device = this.getDevice(serial);
       if (!(device instanceof MetroDevice)) {