base: Add three-fingers-swipe to screenshot [1/2]

[vishakh53]

The feature is ported from Oppo ColorOS. With the options on, users can swipe down on the screen to have a screenshot. Original smali port by: wuxianlin

Change-Id: I87ed333f81e1259758ea899bf019061d8ab85fd0

base: Improvements for swipe to screenshot

• Cancel touch events when tap with three fingers

• Dyrex2004: Fix typos (Screnshot -> Screenshot)

Change-Id: I6e1228e4101aa357d1e26ca6d0db1c44428ef367

base: SwipeToScreenshot: Import MIUI implementation

Reverse engineered from Xiaomi/beryllium/beryllium:9/PKQ1.180729.001/9.2.25:user/release-keys

Change-Id: I1d5938457b7cc4c5ef1fec235d27d8a40526961a Signed-off-by: Omkar Chandorkar gotenksIN@aospa.co Signed-off-by: Dhruv dhruvgera61@gmail.com

[eldainosor]

Merged, thanks for sending us this PR!