fix: Make recorder less error-prone (#189)

* Abort recording if failed to start or empty frames

* Activate Audio Session on `cameraQueue`

* Double-check stop recording in callback

* Only call callback once

* Format

* Add description to `.aborted` error

* Update RecordingSession.swift

* Update AVAudioSession+updateCategory.swift

* Rename serial dispatch queues

ios/React Utils/Callback.swift

@@ -12,27 +12,38 @@ import Foundation
  Represents a callback to JavaScript. Syntax is the same as with Promise.
  */
 class Callback {
+  private var hasCalled = false
+  private let callback: RCTResponseSenderBlock
+
   init(_ callback: @escaping RCTResponseSenderBlock) {
     self.callback = callback
   }
 
   func reject(error: CameraError, cause: NSError?) {
+    guard !hasCalled else { return }
+
     callback([NSNull(), makeReactError(error, cause: cause)])
+    hasCalled = true
   }
 
   func reject(error: CameraError) {
+    guard !hasCalled else { return }
+
     reject(error: error, cause: nil)
+    hasCalled = true
   }
 
-  func resolve(_ value: Any?) {
+  func resolve(_ value: Any) {
+    guard !hasCalled else { return }
+
     callback([value, NSNull()])
+    hasCalled = true
   }
 
   func resolve() {
-    resolve(nil)
+    guard !hasCalled else { return }
+
+    resolve(NSNull())
+    hasCalled = true
   }
-
-  // MARK: Private
-
-  private let callback: RCTResponseSenderBlock
 }