Update Android Project Generation to support AGP 4.2.0, Cmake 3.20, and newer versions of NDK&SDK

- build.gradle format updates for newer Android Gradle Plugin
- Remove hard coded Android Gradle Plugin version 3.6.4 to be passed in from command args
- Set Android Gradle Plugin min version 4.2.0 in order to support Min CMake version 3.20
- Add ability to use the android sdk to install missing components if needed rather than doing it externally
- Removed argument to pass in the NDK folder to use the android, use the android-sdk instead. Can request specific NDK versions if possible
- Android Gradle Plugin has dependencies by version and is being managed
- More defaults based on tools on path, agp version made possible so they are no longer needed in the command args

Code/Tools/Android/ProjectBuilder/build.gradle.in

@@ -15,14 +15,14 @@ android {
 ${SIGNING_CONFIGS}
     compileSdkVersion sdkVer
     buildToolsVersion buildToolsVer
-
+    ndkVersion ndkPlatformVer
 	lintOptions {
         abortOnError false
         checkReleaseBuilds false
     }
 
     defaultConfig {
-        minSdkVersion ndkPlatformVer
+        minSdkVersion minSdkVer
         targetSdkVersion sdkVer
 ${NATIVE_CMAKE_SECTION_DEFAULT_CONFIG}
     }