[Feature] Added IOS buffer configuration to player

ios/Classes/BetterPlayer.h

@@ -25,6 +25,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, readonly) bool isPlaying;
 @property(nonatomic) bool isLooping;
 @property(nonatomic, readonly) bool isInitialized;
+@property(nonatomic, readonly) NSTimeInterval bufferDuration;
 @property(nonatomic, readonly) NSString* key;
 @property(nonatomic, readonly) int failedCount;
 @property(nonatomic) AVPlayerLayer* _playerLayer;
@@ -38,6 +39,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)play;
 - (void)pause;
 - (void)setIsLooping:(bool)isLooping;
+- (void)setBufferDuration:(NSTimeInterval)bufferDuration;
 - (void)updatePlayingState;
 - (int64_t) duration;
 - (int64_t) position;

ios/Classes/BetterPlayer.m

@@ -33,6 +33,7 @@ - (instancetype)initWithFrame:(CGRect)frame {
         _player.automaticallyWaitsToMinimizeStalling = false;
     }
     self._observersAdded = false;
+    _bufferDuration = 0;
     return self;
 }
 
@@ -228,6 +229,10 @@ - (void)setDataSourceURL:(NSURL*)url withKey:(NSString*)key withCertificateUrl:(
     if (@available(iOS 10.0, *) && overriddenDuration > 0) {
         _overriddenDuration = overriddenDuration;
     }
+
+    if (@available(iOS 10.0, *)) {
+        [item setPreferredForwardBufferDuration:_bufferDuration];
+    }
     return [self setDataSourcePlayerItem:item withKey:key];
 }
 
@@ -539,6 +544,10 @@ - (void)setIsLooping:(bool)isLooping {
     _isLooping = isLooping;
 }
 
+- (void)setBufferDuration:(NSTimeInterval)bufferDuration {
+    _bufferDuration = bufferDuration;
+}
+
 - (void)setVolume:(double)volume {
     _player.volume = (float)((volume < 0.0) ? 0.0 : ((volume > 1.0) ? 1.0 : volume));
 }

ios/Classes/BetterPlayerPlugin.m

@@ -290,6 +290,14 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
         result(nil);
     } else if ([@"create" isEqualToString:call.method]) {
         BetterPlayer* player = [[BetterPlayer alloc] initWithFrame:CGRectZero];
+        NSDictionary *argsMap = call.arguments;
+
+        if ([argsMap objectForKey:@"maxBufferMs"] != [NSNull null]){
+            NSNumber *parseNumber = argsMap[@"maxBufferMs"];
+            float maxBufferMs = [parseNumber floatValue] / 1000;
+            [player setBufferDuration:maxBufferMs];
+        }
+
         [self onPlayerSetup:player result:result];
     } else {
         NSDictionary* argsMap = call.arguments;