fix(types): add missing types for create and setBaseURL (#122)

* fix: add missing types for `create` and `setBaseURL`

* fix: correct `create` return type

types/index.d.ts

@@ -104,6 +104,12 @@ interface NuxtHTTPInstance {
 	$delete<T = unknown>(url: Request | URL | string, options?: Options): Promise<T>;
 
 
+  /**
+   * Set the baseURL for all subsequent requests.
+   * @param baseURL - the base URL (e.g. `https://myapi.com/`)
+   */
+  setBaseURL(baseURL: string): void
+
   /**
    * Set a header on all subsequent requests.
    * @param name - Header name.
@@ -146,6 +152,11 @@ interface NuxtHTTPInstance {
    * This hook enables you to globally handle request errors.
    */
   onError(hook: (error: ky.HTTPError) => void): void
+
+  /**
+   * If you need to create your own ky instance which based on $http defaults, you can use the create(options) method.
+   */
+  create(options: Partial<Options>): NuxtHTTPInstance
 }
 
 declare module '@nuxt/vue-app' {