apktool: add page (#4053)

pages/common/apktool.md

@@ -0,0 +1,16 @@
+# apktool
+
+> Reverse engineer APK files.
+> More information: <https://ibotpeaches.github.io/Apktool/>.
+
+- Decode an APK file:
+
+`apktool d {{file.apk}}`
+
+- Build a folder into an APK file:
+
+`apktool b {{path/to/directory}}`
+
+- Install and store frameworks:
+
+`apktool if {{framework.apk}}`