Add isVoiceMessage()

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/utils/EventUtils.ts

@@ -139,3 +139,12 @@ export function getEventDisplayInfo(mxEvent: MatrixEvent): {
 
     return { tileHandler, isInfoMessage, isBubbleMessage };
 }
+
+export function isVoiceMessage(mxEvent: MatrixEvent): boolean {
+    const content = mxEvent.getContent();
+    // MSC2516 is a legacy identifier. See https://github.com/matrix-org/matrix-doc/pull/3245
+    return (
+        !!content['org.matrix.msc2516.voice'] ||
+        !!content['org.matrix.msc3245.voice']
+    );
+}