[feat] extend platform

[pavjacko]

Description

• enables extending platform object with existing one

example:

"platforms": {
        "android": {
            "minSdkVersion": 26,
            "targetSdkVersion": 33,
            "compileSdkVersion": 33,
            "buildToolsVersion": "30.0.0",
            "gradleBuildToolsVersion": "4.2.2",
            "gradleWrapperVersion": "8.0.1",
            "kotlinVersion": "1.7.10",
            "reactNativeEngine": "hermes",
            "enableAndroidX": true,
            "templateAndroid": {
                "gradle_properties": {
                    "android.useDeprecatedNdk": true,
                    "android.enableJetifier": true,
                    "android.useAndroidX": true,
                    "android.debug.obsoleteApi": true,
                    "org.gradle.jvmargs": "-Xmx3g -XX:MaxPermSize=2048m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8",
                    "org.gradle.daemon": true,
                    "org.gradle.parallel": true,
                    "org.gradle.configureondemand": true
                },
                "MainActivity_java": {
                    "onCreate": "super.onCreate(null)"
                }
            }
        },
        "androidtv": {
            "extendPlatform": "android",
            "engine": "engine-rn-tvos"
        },
        "androidwear": {
            "extendPlatform": "android"
        },
        "firetv": {
            "extendPlatform": "android",
            "engine": "engine-rn-tvos",
            "includedPermissions": ["INTERNET"]
        }
}

Breaking Changes

• none

I have tested my changes on:

ReNative project directly:

• ios simulator
• ios device
• android simulator
• android device
• web browser
• tvos simulator
• tvos device
• androidtv simulator
• androidtv device
• androidwear simulator
• androidwear device
• tizen simulator
• tizen device
• tizenmobile simulator
• tizenwatch device
• webos simulator
• webos device
• macos
• windows
• chromecast device

New project:

• ios simulator
• ios device
• android simulator
• android device
• web browser
• tvos simulator
• tvos device
• androidtv simulator
• androidtv device
• androidwear simulator
• androidwear device
• tizen simulator
• tizen device
• tizenmobile simulator
• tizenwatch device
• webos simulator
• webos device
• macos
• windows
• chromecast device

Existing Project created with previous version of renative:

• ios simulator
• ios device
• android simulator
• android device
• web browser
• tvos simulator
• tvos device
• androidtv simulator
• androidtv device
• androidwear simulator
• androidwear device
• tizen simulator
• tizen device
• tizenmobile simulator
• tizenwatch device
• webos simulator
• webos device
• macos
• windows
• chromecast device