IDE to run CLI with auto assigned port (#673)

* get daemon port from CLI stdout

* config-service to use CLI daemon port

* updating LS

* fixed tests

* fix upload blocked when selectedBoard.port is undefined

* bump arduino-cli to 0.20.2

Co-authored-by: Alberto Iannaccone <a.iannaccone@arduino.cc>

arduino-ide-extension/src/common/protocol/arduino-daemon.ts

@@ -2,4 +2,5 @@ export const ArduinoDaemonPath = '/services/arduino-daemon';
 export const ArduinoDaemon = Symbol('ArduinoDaemon');
 export interface ArduinoDaemon {
   isRunning(): Promise<boolean>;
+  getPort(): Promise<string>;
 }