Base: AOSB RecentApp v2

PS1: Fix the memory leak and more
PS2: reduce memory usage
PS3: Improvement thumbnail size also on landscape mode
PS4: Attach the default thumbnail size for solutions not conflict with slim recents
PS5: ability to switch between 3 modes of recents
PS6: convert drawable to bitmap in AOSB mode then convert it back to drawable
PS7: set height, width for each mode
PS8: add standard clear app icon