Merge branch 'ra' into 'master'

add react

Add  [react](https://github.com/baiatBun/React) app. Requested [here](https://f-droid.org/forums/topic/react/).

See merge request !1735

metadata/io.github.baiatbun.react.txt

@@ -0,0 +1,25 @@
+Categories:Games
+License:GPLv3+
+Web Site:https://baiatbun.github.io/React/
+Source Code:https://github.com/baiatBun/React
+Issue Tracker:https://github.com/baiatBun/React/issues
+Changelog:https://github.com/baiatBun/React/releases
+
+Auto Name:React
+Summary:The application tests your reaction time
+Description:
+A simple application that tests your reaction time.
+.
+
+Repo Type:git
+Repo:https://github.com/baiatBun/React.git
+
+Build:1.2.1,1
+    commit=v1.2.1
+    subdir=app
+    gradle=yes
+
+Auto Update Mode:Version v%v
+Update Check Mode:Tags
+Current Version:1.2.1
+Current Version Code:1