feat: Add TypeScript definitions (#9693)

types/@types/@parse/fs-files-adapter/index.d.ts

@@ -0,0 +1,5 @@
+// TODO: Remove when @parse/fs-files-adapter is typed
+declare module '@parse/fs-files-adapter' {
+  const FileSystemAdapter: any;
+  export default FileSystemAdapter;
+}

types/@types/deepcopy/index.d.ts

@@ -0,0 +1,5 @@
+// TODO: Remove when https://github.com/sasaplus1/deepcopy.js/issues/278 is fixed
+declare type Customizer = (value: any, valueType: string) => unknown;
+declare type Options = Customizer | { customizer: Customizer };
+declare function deepcopy<T>(value: T, options?: Options): T;
+export default deepcopy;