chore: add install and launch script in command

Author: Jacksgong

install.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+adb install -r demo/build/outputs/apk/demo-debug.apk
+
+if [ "$1" == "y" ]; then
+	adb shell am start -n "com.liulishuo.filedownloader.demo/com.liulishuo.filedownloader.demo.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
+fi