[interactive_media_ads] Adds wrappers for native IMA settings (#9481)

[IMASettings.enabledBackgroundPlayback](https://developers.google.com/interactive-media-ads/docs/sdks/ios/client-side/reference/Classes/IMASettings#enablebackgroundplayback) is needed to add support for flutter/flutter#153447 on iOS. 

This just adds all the flags for `IMASettings` and `ImaSdkSettings` for both platforms.

## Pre-Review Checklist

[^1]: Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling.

Author: bparrishMines

packages/interactive_media_ads/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.2.4+1
+
+* Adds internal wrapper for Android native `ImaSdkSettings`.
+* Adds internal wrapper for iOS native `IMASettings`.
+
 ## 0.2.4
 
 * Adds support for companion ads. See `CompanionAdSlot` and `AdDisplayContainer(companionAds)`.

packages/interactive_media_ads/android/src/main/kotlin/dev/flutter/packages/interactive_media_ads/AdsRequestProxyApi.kt

@@ -21,7 +21,7 @@ class AdsRequestProxyApi(override val pigeonRegistrar: ProxyApiRegistrar) :
      *
      * This must match the version in pubspec.yaml.
      */
-    const val pluginVersion = "0.2.4"
+    const val pluginVersion = "0.2.4+1"
   }
 
   override fun setAdTagUrl(pigeon_instance: AdsRequest, adTagUrl: String) {

packages/interactive_media_ads/android/src/main/kotlin/dev/flutter/packages/interactive_media_ads/ImaSdkSettingsProxyApi.kt

@@ -4,11 +4,49 @@
 
 package dev.flutter.packages.interactive_media_ads
 
+import com.google.ads.interactivemedia.v3.api.ImaSdkSettings
+
 /**
  * ProxyApi implementation for [com.google.ads.interactivemedia.v3.api.ImaSdkSettings].
  *
  * <p>This class may handle instantiating native object instances that are attached to a Dart
  * instance or handle method calls on the associated native class or an instance of that class.
  */
 class ImaSdkSettingsProxyApi(override val pigeonRegistrar: ProxyApiRegistrar) :
-    PigeonApiImaSdkSettings(pigeonRegistrar)
+    PigeonApiImaSdkSettings(pigeonRegistrar) {
+  override fun setAutoPlayAdBreaks(pigeon_instance: ImaSdkSettings, autoPlayAdBreaks: Boolean) {
+    pigeon_instance.autoPlayAdBreaks = autoPlayAdBreaks
+  }
+
+  override fun setDebugMode(pigeon_instance: ImaSdkSettings, debugMode: Boolean) {
+    pigeon_instance.isDebugMode = debugMode
+  }
+
+  override fun setFeatureFlags(pigeon_instance: ImaSdkSettings, featureFlags: Map<String, String>) {
+    pigeon_instance.featureFlags = featureFlags
+  }
+
+  override fun setLanguage(pigeon_instance: ImaSdkSettings, language: String) {
+    pigeon_instance.language = language
+  }
+
+  override fun setMaxRedirects(pigeon_instance: ImaSdkSettings, maxRedirects: Long) {
+    pigeon_instance.maxRedirects = maxRedirects.toInt()
+  }
+
+  override fun setPlayerType(pigeon_instance: ImaSdkSettings, playerType: String) {
+    pigeon_instance.playerType = playerType
+  }
+
+  override fun setPlayerVersion(pigeon_instance: ImaSdkSettings, playerVersion: String) {
+    pigeon_instance.playerVersion = playerVersion
+  }
+
+  override fun setPpid(pigeon_instance: ImaSdkSettings, ppid: String) {
+    pigeon_instance.ppid = ppid
+  }
+
+  override fun setSessionId(pigeon_instance: ImaSdkSettings, sessionId: String) {
+    pigeon_instance.sessionId = sessionId
+  }
+}