rename movie folder to animation

Summary:

-BEGIN VERIFY SCRIPT-
sed -i -e 's/movies/animation/g' `git grep -l "movies"`
sed -i -e 's/RES_MOVIES/RES_ANIMATION/g' `git grep -l "RES_MOVIES"`
git mv src/qt/res/movies/ src/qt/res/animation
-END VERIFY SCRIPT-

This is a backport of core-gui#14

Test Plan: ninja && src/qt/bitcoin-qt

Reviewers: #bitcoin_abc, majcosta

Reviewed By: #bitcoin_abc, majcosta

Differential Revision: https://reviews.bitcoinabc.org/D10012