chore: add build scripts

Author: tompsota

example/package.json

@@ -6,7 +6,9 @@
     "android": "react-native run-android",
     "ios": "react-native run-ios",
     "start": "react-native start",
-    "pods": "pod-install --quiet"
+    "pods": "pod-install --quiet",
+    "build:android": "cd android && ./gradlew assembleDebug --no-daemon --console=plain -PreactNativeArchitectures=arm64-v8a",
+    "build:ios": "cd ios && xcodebuild -workspace FreeraspReactNativeExample.xcworkspace -scheme FreeraspReactNativeExample -configuration Debug -sdk iphonesimulator CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ GCC_OPTIMIZATION_LEVEL=0 GCC_PRECOMPILE_PREFIX_HEADER=YES ASSETCATALOG_COMPILER_OPTIMIZATION=time DEBUG_INFORMATION_FORMAT=dwarf COMPILER_INDEX_STORE_ENABLE=NO"
   },
   "dependencies": {
     "@react-native-material/core": "^1.3.7",