Add direct keys to launch applications.

Many TV remotes have direct keys to launch the specific
application such as Netflix. KEYCODE_APP_X are
intended to be used for such a purpose and to be handled
by GlobalKeyManager.
Categorized like below.
 - KEYCODE_VIDEO_APP_X
 - KEYCODE_FEATURED_APP_X
 - KEYCODE_DEMO_APP_X

Prevent KEYCODE_APP_X from being sent to the apps.

Bug: 182532772
Test: atest KeyEventInterceptTest
Change-Id: I13c469c92da97014be5c76c230806331f0602b54
Merged-In: I13c469c92da97014be5c76c230806331f0602b54