Add explicit exclude and include paths to tsconfig

Author: huntie

template/tsconfig.json

@@ -1,3 +1,5 @@
 {
-  "extends": "@react-native/typescript-config"
+  "extends": "@react-native/typescript-config",
+  "exclude": ["node_modules"],
+  "include": ["**/*.ts", "**/*.tsx"]
 }