add findNativeComponentType fn to parsers-commons.js

Add below fn which unifies the `defaultExports.forEach(statement => ..`
behaviors between Flow & TS:

- `findNativeComponentType` : This function is used to find the type of
   a native component provided the default exports statement from generated AST.

Author: Pranav-yadav

packages/react-native-codegen/src/parsers/parsers-commons.js

@@ -657,6 +657,48 @@ const buildModuleSchema = (
     );
 };
 
+/**
+ * This function is used to find the type of a native component
+ * provided the default exports statement from generated AST.
+ * @param statement The statement to be parsed.
+ * @param foundConfigs The 'mutable' array of configs that have been found.
+ * @param parser The language parser to be used.
+ * @returns void
+ */
+function findNativeComponentType(
+  statement: $FlowFixMe,
+  foundConfigs: Array<{[string]: string}>,
+  parser: Parser,
+): void {
+  let declaration = statement.declaration;
+
+  // codegenNativeComponent can be nested inside a cast
+  // expression so we need to go one level deeper
+  if (
+    declaration.type === 'TSAsExpression' ||
+    declaration.type === 'TypeCastExpression'
+  ) {
+    declaration = declaration.expression;
+  }
+
+  try {
+    if (declaration.callee.name === 'codegenNativeComponent') {
+      const typeArgumentParams =
+        parser.getTypeArgumentParamsFromDeclaration(declaration);
+      const funcArgumentParams = declaration.arguments;
+
+      const nativeComponentType: {[string]: string} =
+        parser.getNativeComponentType(typeArgumentParams, funcArgumentParams);
+      if (funcArgumentParams.length > 1) {
+        nativeComponentType.optionsExpression = funcArgumentParams[1];
+      }
+      foundConfigs.push(nativeComponentType);
+    }
+  } catch (e) {
+    // ignore
+  }
+}
+
 module.exports = {
   wrapModuleSchema,
   unwrapNullable,
@@ -671,4 +713,5 @@ module.exports = {
   createComponentConfig,
   parseModuleName,
   buildModuleSchema,
+  findNativeComponentType,
 };