bugreport, bugreportz: add page (#5743)

pages/android/bugreportz.md

@@ -0,0 +1,21 @@
+# bugreportz
+
+> Generate a zipped Android bug report.
+> This command can only be used through `adb shell`.
+> More information: <https://android.googlesource.com/platform/frameworks/native/+/master/cmds/bugreportz/>.
+
+- Generate a complete zipped bug report of an Android device:
+
+`bugreportz`
+
+- Show the progress of a running `bugreportz` operation:
+
+`bugreportz -p`
+
+- Show the version of `bugreportz`:
+
+`bugreportz -v`
+
+- Display help:
+
+`bugreportz -h`