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/metro.config.js

@@ -4,45 +4,19 @@
  *
  * @format
  */
-const fs = require('fs');
 const path = require('path');
 const blacklist = require('metro-config/src/defaults/blacklist');
 
-const rnPath = fs.realpathSync(
-  path.resolve(require.resolve('react-native/package.json'), '..'),
-);
-const rnwPath = fs.realpathSync(
-  path.resolve(require.resolve('react-native-windows/package.json'), '..'),
-);
-
 module.exports = {
   resolver: {
-    extraNodeModules: {
-      // Redirect react-native to react-native-windows
-      'react-native': rnwPath,
-      'react-native-windows': rnwPath,
-    },
-    // Include the macos platform in addition to the defaults because the fork includes macos, but doesn't declare it
-    platforms: ['ios', 'android', 'windesktop', 'windows', 'web', 'macos'],
-    // Since there are multiple copies of react-native, we need to ensure that metro only sees one of them
-    // This should go in RN 0.61 when haste is removed
     blacklistRE: blacklist([
-      new RegExp(
-        `${(path.resolve(rnPath) + path.sep).replace(/[/\\]/g, '/')}.*`,
-      ),
-
       // This stops "react-native run-windows" from causing the metro server to crash if its already running
       new RegExp(
         `${path.resolve(__dirname, 'windows').replace(/[/\\]/g, '/')}.*`,
       ),
-      // Prevent recursive node_modules from local react-native-video
-      new RegExp(
-        `${path.resolve(__dirname, 'node_modules/react-native-video/node_modules').replace(/[/\\]/g, '/')}.*`,
-      ),
-      // Prevent recursive examples from local react-native-video
-      new RegExp(
-        `${path.resolve(__dirname, 'node_modules/react-native-video/examples').replace(/[/\\]/g, '/')}.*`,
-      ),
+      // This prevents "react-native run-windows" from hitting: EBUSY: resource busy or locked, open msbuild.ProjectImports.zip
+      /.*\.ProjectImports\.zip/,
+      /(.*\/react-native-video\/node_modules\/.*)$/,
     ]),
   },
   transformer: {