startop: Add script to force dex2oat compilation filter for app

Example: ./force_compiler_filter --package com.google.android.apps.maps --compiler-filter speed-profile

Run the app just slightly enough to fully start up, then force it to
dump the profile and recompile the application with dex2oat under the
speed-profile filter.

(Also supports any other compilation filter such as quicken, speed,
etc).

Subsequently, this command can be used to manually validate that the
compiler filter was indeed changed:

 $ adb shell dumpsys package com.google.android.apps.maps | grep -A10 "Dexopt state"
 Dexopt state:
   [com.google.android.apps.maps]
     path: /data/app/com.google.android.apps.maps-D7s8PLidqqEq7Jc7UH_a5A==/base.apk
       arm64: [status=speed-profile] [reason=unknown]

Test: Manual (see above)
Change-Id: Iea6067f90dc287d1de651d1ab36df69d23b2e9c1