ktx module for dynamicanimation

- Module setup
- Extensions for dynamic animation API

Extensions update

- Removed extensions for instantiating SpringAnimation and attaching SpringForce.
- Merged two extensions for creating SpringAnimation into one with default value for finalPosition.

Test: Not done yet because extensions need to be finalise.

Change-Id: I863f73500187e537e8bbb13d4d5236b5756afc96

diff --git a/settings.gradle b/settings.gradle
index 7af8f7b..d4a2bca 100644
--- a/settings.gradle
+++ b/settings.gradle

@@ -63,6 +63,7 @@
 includeProject(":documentfile", "documentfile")
 includeProject(":drawerlayout", "drawerlayout")
 includeProject(":dynamicanimation", "dynamic-animation")
+includeProject(":dynamicanimation-ktx", "dynamic-animation/ktx")
 includeProject(":emoji", "emoji/core")
 includeProject(":emoji-bundled", "emoji/bundled")
 includeProject(":emoji-appcompat", "emoji/appcompat")