Avoid deleting the workspace when it's still in use.

- From now on, NSFW service disposes after last reference
is removed. No more 10sec delay.
 - Moved the temp workspace deletion to a startup task.
 - Can set initial task for the window from electron-main.
 - Removed the `browser-app`.

Closes #39

Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

arduino-ide-extension/src/common/protocol/sketches-service-client-impl.ts

@@ -165,15 +165,6 @@ export class SketchesServiceClientImpl
       .reachedState('started_contributions')
       .then(async () => {
         const currentSketch = await this.loadCurrentSketch();
-        if (CurrentSketch.isValid(currentSketch)) {
-          this.toDispose.pushAll([
-            // Watch the file changes of the current sketch
-            this.fileService.watch(new URI(currentSketch.uri), {
-              recursive: true,
-              excludes: [],
-            }),
-          ]);
-        }
         this.useCurrentSketch(currentSketch);
       });
   }

arduino-ide-extension/src/common/protocol/sketches-service.ts

@@ -97,9 +97,9 @@ export interface SketchesService {
   getIdeTempFolderUri(sketch: Sketch): Promise<string>;
 
   /**
-   * Notifies the backend to recursively delete the sketch folder with all its content.
+   * Recursively deletes the sketch folder with all its content.
    */
-  notifyDeleteSketch(sketch: Sketch): void;
+  deleteSketch(sketch: Sketch): Promise<void>;
 }
 
 export interface SketchRef {