feat: Implement resizeMode prop for iOS (#1838)

* feat: Implement `resizeMode` prop for iOS

- `"cover"`: Keep aspect ratio, but fill entire parent view (centered).
- `"contain"`: Keep aspect ratio, but make sure the entire content is visible even if it introduces additional blank areas (centered).

* chore: Update prop docs

* Update CameraProps.ts

* Lint & Format

package/ios/Types/ResizeMode.swift

@@ -0,0 +1,35 @@
+//
+//  ResizeMode.swift
+//  VisionCamera
+//
+//  Created by Marc Rousavy on 22.09.23.
+//  Copyright © 2023 mrousavy. All rights reserved.
+//
+
+import Foundation
+
+/**
+ A ResizeMode used for the PreviewView.
+ */
+enum ResizeMode {
+  /**
+   Keep aspect ratio, but fill entire parent view (centered).
+   */
+  case cover
+  /**
+   Keep aspect ratio, but make sure the entire content is visible even if it introduces additional blank areas (centered).
+   */
+  case contain
+
+  init(fromTypeScriptUnion union: String) {
+    switch union {
+    case "cover":
+      self = .cover
+    case "contain":
+      self = .contain
+    default:
+      // TODO: Use the onError event for safer error handling!
+      fatalError("Invalid value passed for resizeMode! (\(union))")
+    }
+  }
+}