fix: facebook share button (#427)

lib/convert/bloc/convert_bloc.dart

@@ -67,6 +67,7 @@ class ConvertBloc extends Bloc<ConvertEvent, ConvertState> {
           gifPath: result.gifUrl,
           status: ConvertStatus.videoCreated,
           twitterShareUrl: result.twitterShareUrl,
+          facebookShareUrl: result.facebookShareUrl,
           triesCount: 0,
           shareStatus:
               isWaitingForVideo ? ShareStatus.ready : ShareStatus.initial,

test/convert/bloc/convert_bloc_test.dart

@@ -113,6 +113,8 @@ void main() {
               videoUrl: videoUrl,
               gifUrl: gifUrl,
               firstFrame: firstFrame,
+              twitterShareUrl: 'twitter',
+              facebookShareUrl: 'facebook',
             ),
           );
         },
@@ -127,6 +129,8 @@ void main() {
             status: ConvertStatus.videoCreated,
             gifPath: gifUrl,
             videoPath: videoUrl,
+            twitterShareUrl: 'twitter',
+            facebookShareUrl: 'facebook',
           ),
         ],
       );