Added @mainactor attribute to all async functions

I've got a crash when using async functions - as they were executed in
background thread. See SvenTiigi#79

Author: shadone

Sources/API/YouTubePlayer+PlaybackAPI.swift

@@ -19,6 +19,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns a number between 0 and 1 that specifies the percentage of the video that the player shows as buffered
+    @MainActor
     func getVideoLoadedFraction() async throws -> Double {
         try await withCheckedThrowingContinuation { continuation in
             self.getVideoLoadedFraction(completion: continuation.resume)
@@ -79,6 +80,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the PlaybackState of the player video
+    @MainActor
     func getPlaybackState() async throws -> PlaybackState {
         try await withCheckedThrowingContinuation { continuation in
             self.getPlaybackState(completion: continuation.resume)
@@ -100,6 +102,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the elapsed time in seconds since the video started playing
+    @MainActor
     func getCurrentTime() async throws -> Double {
         try await withCheckedThrowingContinuation { continuation in
             self.getCurrentTime(completion: continuation.resume)
@@ -159,6 +162,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the current PlaybackMetadata
+    @MainActor
     func getPlaybackMetadata() async throws -> PlaybackMetadata {
         try await withCheckedThrowingContinuation { continuation in
             self.getPlaybackMetadata(completion: continuation.resume)

Sources/API/YouTubePlayer+PlaybackRateAPI.swift

@@ -18,6 +18,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// This function retrieves the playback rate of the currently playing video
+    @MainActor
     func getPlaybackRate() async throws -> PlaybackRate {
         try await withCheckedThrowingContinuation { continuation in
             self.getPlaybackRate(completion: continuation.resume)
@@ -52,6 +53,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// This function returns the set of playback rates in which the current video is available
+    @MainActor
     func getAvailablePlaybackRates() async throws -> [PlaybackRate] {
         try await withCheckedThrowingContinuation { continuation in
             self.getAvailablePlaybackRates(completion: continuation.resume)

Sources/API/YouTubePlayer+PlaylistAPI.swift

@@ -73,6 +73,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// This function returns an array of the video IDs in the playlist as they are currently ordered
+    @MainActor
     func getPlaylist() async throws -> [String] {
         try await withCheckedThrowingContinuation { continuation in
             self.getPlaylist(completion: continuation.resume)
@@ -94,6 +95,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// This function returns the index of the playlist video that is currently playing.
+    @MainActor
     func getPlaylistIndex() async throws -> Int {
         try await withCheckedThrowingContinuation { continuation in
             self.getPlaylistIndex(completion: continuation.resume)

Sources/API/YouTubePlayer+VideoInformationAPI.swift

@@ -36,6 +36,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Retrieve the YouTubePlayer Information
+    @MainActor
     func getInformation() async throws -> Information {
         try await withCheckedThrowingContinuation { continuation in
             self.getInformation(completion: continuation.resume)
@@ -57,6 +58,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the duration in seconds of the currently playing video
+    @MainActor
     func getDuration() async throws -> Double {
         try await withCheckedThrowingContinuation { continuation in
             self.getDuration(completion: continuation.resume)
@@ -96,6 +98,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the YouTube.com URL for the currently loaded/playing video
+    @MainActor
     func getVideoURL() async throws -> String {
         try await withCheckedThrowingContinuation { continuation in
             self.getVideoURL(completion: continuation.resume)
@@ -117,6 +120,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the embed code for the currently loaded/playing video
+    @MainActor
     func getVideoEmbedCode() async throws -> String {
         try await withCheckedThrowingContinuation { continuation in
             self.getVideoEmbedCode(completion: continuation.resume)

Sources/API/YouTubePlayer+VolumeAPI.swift

@@ -32,6 +32,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns Bool value if the player is muted
+    @MainActor
     func isMuted() async throws -> Bool {
         try await withCheckedThrowingContinuation { continuation in
             self.isMuted(completion: continuation.resume)
@@ -53,6 +54,7 @@ public extension YouTubePlayer {
 
     #if compiler(>=5.5) && canImport(_Concurrency)
     /// Returns the player's current volume, an integer between 0 and 100
+    @MainActor
     func getVolume() async throws -> Int {
         try await withCheckedThrowingContinuation { continuation in
             self.getVolume(completion: continuation.resume)