iOS Swift Conversion (#2527)

Converts iOS implementation from Objective-c to Swift

# During the conversion process some updates to the code structure were also made
- Modularize codebase from single file to smaller focused files
- Untangled large nested IF statements
- Added more null checks, since Swift is more strict with null pointers
- Added property to allow for decoding of local video sources with self contained key for offline playback
- Updates example apps to test react-native 0.63.4 and uses auto native dependency imports for android and ios

examples/basic/ios/VideoPlayer/AppDelegate.m

@@ -9,21 +9,42 @@
 
 #import "AppDelegate.h"
 
+#import <React/RCTBridge.h>
 #import <React/RCTBundleURLProvider.h>
 #import <React/RCTRootView.h>
 
+#ifdef FB_SONARKIT_ENABLED
+#import <FlipperKit/FlipperClient.h>
+#import <FlipperKitLayoutPlugin/FlipperKitLayoutPlugin.h>
+#import <FlipperKitUserDefaultsPlugin/FKUserDefaultsPlugin.h>
+#import <FlipperKitNetworkPlugin/FlipperKitNetworkPlugin.h>
+#import <SKIOSNetworkPlugin/SKIOSNetworkAdapter.h>
+#import <FlipperKitReactPlugin/FlipperKitReactPlugin.h>
+
+static void InitializeFlipper(UIApplication *application) {
+  FlipperClient *client = [FlipperClient sharedClient];
+  SKDescriptorMapper *layoutDescriptorMapper = [[SKDescriptorMapper alloc] initWithDefaults];
+  [client addPlugin:[[FlipperKitLayoutPlugin alloc] initWithRootNode:application withDescriptorMapper:layoutDescriptorMapper]];
+  [client addPlugin:[[FKUserDefaultsPlugin alloc] initWithSuiteName:nil]];
+  [client addPlugin:[FlipperKitReactPlugin new]];
+  [client addPlugin:[[FlipperKitNetworkPlugin alloc] initWithNetworkAdapter:[SKIOSNetworkAdapter new]]];
+  [client start];
+}
+#endif
+
 @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
-  NSURL *jsCodeLocation;
+#ifdef FB_SONARKIT_ENABLED
+  InitializeFlipper(application);
+#endif
 
-  jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
+  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
+  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
+                                                   moduleName:@"VideoPlayer"
+                                            initialProperties:nil];
 
-  RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
-                                                      moduleName:@"VideoPlayer"
-                                               initialProperties:nil
-                                                   launchOptions:launchOptions];
   rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];
 
   self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
@@ -34,4 +55,13 @@
   return YES;
 }
 
+- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
+{
+#if DEBUG
+  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"src/index" fallbackResource:nil];
+#else
+  return [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
+#endif
+}
+
 @end