Introduce INPUT_CONSUMER permission for InputConsumer

Add the permission protect to createInputConsumer/destoryInputConsumer
in WindowManagerService to prevent it is possible for an app to consume
all the touch events and deny them from even reaching System UI.

Also fix the wallpaper inputconsumer should only show when we found a
visible wallpaper window.

Also limit 'createInputConsumer' to the defined types.

Test: atest PermissionPolicyTest
Test: ceate/destory an inputconsumer and test input
Fix: 162324374
Fix: 171829300
Merged-In: I7a4c2c4cba7ea670873ab2ac49b9880d9a65cd86
Change-Id: I7a4c2c4cba7ea670873ab2ac49b9880d9a65cd86
(cherry picked from commit 0d0ad1b6)
(cherry picked from commit 80951fa9)