feat: support clearCache on local provider

docs/content/en/providers.md

@@ -11,13 +11,15 @@ Complete list of internal providers.
 
 Local provider is an integration of ipx and image module. Local provider is an specific provider that uses for development, optimizing in-project.  
 By default local provider looks `static` dir to find original images, You can change `dir` inside `nuxt.config`.
+The local provider has a chaching stategy to clear cached images to reduce massive disk usages. You can schedule the cache cleaning job using `clearCache` option in provide options. By default this cron job is disabled.
 
 ```js{}[nuxt.config.js]
 export default {
   image: {
     providers: {
       local: {
-        dir: '~/assets/images/local'
+        dir: '~/assets/images/local',
+        clearCache: false
       }
     }
   }

src/providers/local/index.ts

@@ -16,6 +16,9 @@ function createMiddleware(options) {
       adapter: 'fs',
       dir: options.dir
     },
+    cache: {
+      cleanCron: options.clearCache || false,
+    }
   });
   return IPXMiddleware(ipx)
 }

src/types.ts

@@ -26,6 +26,7 @@ export type ProviderServerMiddleware = (req, res, next) => void
 
 export interface LocalOptions {
   dir?: string
+  clearCache?: boolean | string;
 }
 
 export interface GenerateOptions {