Update ERN platform to support RN 0.68.7

[rthic23]

• Update Android Plugins and tools to support RN 0.68.7. - https://github.com/electrode-io/react-native/tree/0.68-stable ANDROID_GRADLE_PLUGIN_VERSION = '7.0.4'; BUILD_TOOLS_VERSION = '31.0.0'; COMPILE_SDK_VERSION = '31'; GRADLE_DISTRIBUTION_VERSION = '7.3.3'; KOTLIN_VERSION = '1.6.10'; MIN_SDK_VERSION_PRE_RN64 = '19'; MIN_SDK_VERSION_POST_RN64 = '21'; TARGET_SDK_VERSION = '30';

• Update RN Codegen based on react-native version

  • gte 0.68.4 => codegen ^0.0.18
  • gte 0.68.2 => codegen ^0.0.17
  • gte 0.68.0 => codegen ^0.0.13

• React Native 0.68.0 Breaking Changes - Removed fallbackResource from RCTBundleURLProvider API (0912ee179c)

• ern run-ios Build Failed due to yargs package not found in generate-specs-cli script. Added yargs since this package is missing from generate-specs-cli script. - https://github.com/facebook/react-native/issues/36315. Issue is resolved from RN 0.72.0-rc.0 to prevent script failures - https://github.com/facebook/react-native/commit/5093e557efac35632d99cd2094527f9e01cbc519

[rthic23]

@friederbluemle addressed your comments.

[rthic23]

@leekuo @friederbluemle addressed the comments 👍

[rthic23]

The Gradle Wrapper scripts (gradlew/gradlew.bat), as well as gradle-wrapper.jar still need to be updated to match version 7.3.3 - Once that's done it should be ready to merge

updated the scripts 👍