improve types of the tailwindcss/plugin

This also exposes/types the `plugin.withOptions` as described here: https://tailwindcss.com/docs/plugins#exposing-options

plugin.d.ts

@@ -1,6 +1,11 @@
 import type { Config, PluginCreator } from './types/config'
-declare function createPlugin(
-  plugin: PluginCreator,
-  config?: Config
-): { handler: PluginCreator; config?: Config }
-export = createPlugin
+type Plugin = {
+  withOptions<T>(
+    plugin: (options: T) => PluginCreator,
+    config?: (options: T) => Config
+  ): { (options: T): { handler: PluginCreator; config?: Config }; __isOptionsFunction: true }
+  (plugin: PluginCreator, config?: Config): { handler: PluginCreator; config?: Config }
+}
+
+declare const plugin: Plugin
+export = plugin

types/config.d.ts

@@ -297,7 +297,11 @@ export interface PluginAPI {
   e: (className: string) => string
 }
 export type PluginCreator = (api: PluginAPI) => void
-export type PluginsConfig = (PluginCreator | { handler: PluginCreator; config?: Config })[]
+export type PluginsConfig = (
+  | PluginCreator
+  | { handler: PluginCreator; config?: Config }
+  | { (options: any): { handler: PluginCreator; config?: Config }; __isOptionsFunction: true }
+)[]
 
 // Top level config related
 interface RequiredConfig {