Added support for deleting FCM token

Author: griffinsorrentino

firebase-messaging/src/androidMain/kotlin/dev/gitlive/firebase/messaging/messaging.kt

@@ -18,4 +18,8 @@ public actual class FirebaseMessaging(public val android: com.google.firebase.me
     }
 
     public actual suspend fun getToken(): String = android.token.await()
+
+    public actual suspend fun deleteToken() {
+        android.deleteToken().await()
+    }
 }

firebase-messaging/src/commonMain/kotlin/dev/gitlive/firebase/messaging/messaging.kt

@@ -28,4 +28,9 @@ public expect class FirebaseMessaging {
      * @return [String] FCM token
      */
     public suspend fun getToken(): String
+
+    /**
+     * Delete FCM token for client
+     */
+    public suspend fun deleteToken()
 }

firebase-messaging/src/iosMain/kotlin/dev/gitlive/firebase/messaging/messaging.kt

@@ -18,6 +18,10 @@ public actual class FirebaseMessaging(public val ios: FIRMessaging) {
     }
 
     public actual suspend fun getToken(): String = awaitResult { ios.tokenWithCompletion(it) }
+
+    public actual suspend fun deleteToken() {
+        await { ios.deleteTokenWithCompletion(it) }
+    }
 }
 
 public suspend inline fun <T> T.await(function: T.(callback: (NSError?) -> Unit) -> Unit) {