Support for additional S3 providers (#71)

* support for other s3 providers

* remove redundant route options

* use type safe env

* prettier

src/app/api/s3-upload/route.ts

@@ -1,4 +1,5 @@
 import { randomId } from '@/lib/api'
+import { env } from '@/lib/env'
 import { POST as route } from 'next-s3-upload/route'
 
 export const POST = route.configure({
@@ -8,4 +9,7 @@ export const POST = route.configure({
     const random = randomId()
     return `document-${timestamp}-${random}${extension.toLowerCase()}`
   },
+  endpoint: env.S3_UPLOAD_ENDPOINT,
+  // forcing path style is only necessary for providers other than AWS
+  forcePathStyle: !!env.S3_UPLOAD_ENDPOINT,
 })