Implement reboot functionality (#680)

This PR add a possibility to reboot the reboot device, metro and
devtools processes without triggering clean build. It was previously
only possible by closing and reopening the IDE panel itself.

This also will provide necessary functionality for  #663

### How Has This Been Tested: 

- run an application and pick "Reboot IDE" option from reload dropdown
menu

packages/vscode-extension/src/project/project.ts

@@ -354,6 +354,15 @@ export class Project
 
   public async reload(type: ReloadAction): Promise<boolean> {
     this.updateProjectState({ status: "starting" });
+
+    // this action needs to be handled outside of device session as it resets the device session itself
+    if (type === "reboot") {
+      const deviceInfo = this.projectState.selectedDevice!;
+      await this.start(true, false);
+      await this.selectDevice(deviceInfo);
+      return true;
+    }
+
     const success = (await this.deviceSession?.perform(type)) ?? false;
     if (success) {
       this.updateProjectState({ status: "running" });

packages/vscode-extension/src/webview/components/UrlBar.tsx

@@ -19,6 +19,7 @@ function ReloadButton({ disabled }: { disabled: boolean }) {
         "Restart app process": () => project.reload("restartProcess"),
         "Reinstall app": () => project.reload("reinstall"),
         "Clear Metro cache": () => project.restart("metro"),
+        "Reboot IDE": () => project.reload("reboot"),
         "Clean rebuild": () => project.restart("all"),
       }}>
       <span className="codicon codicon-refresh" />