gradle: Added android-gif library dependency.

- Library used for displaying animated gif's.

build.gradle

@@ -216,6 +216,7 @@ dependencies {
     implementation 'com.google.code.gson:gson:2.8.2'
     implementation 'com.afollestad:sectioned-recyclerview:0.5.0'
     implementation 'com.github.chrisbanes:PhotoView:2.1.3'
+    implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.12'
 
     // uncomment for gplay
     // implementation "com.google.firebase:firebase-messaging:${googleLibraryVersion}"