Add support for registering vendor asset routes

src/http/response/FileResponseFactory.ts

@@ -1,6 +1,7 @@
 import {ResponseFactory} from './ResponseFactory'
 import {Request} from '../lifecycle/Request'
 import {ErrorWithContext, UniversalPath} from '../../util'
+import {Logging} from '../../service/Logging'
 
 /**
  * Helper function that creates a FileResponseFactory for the given path.
@@ -28,6 +29,7 @@ export class FileResponseFactory extends ResponseFactory {
             })
         }
 
+        request.make<Logging>(Logging).debug(`Setting Content-Type of ${this.path} to ${this.path.contentType}...`)
         request.response.setHeader('Content-Type', this.path.contentType || 'application/octet-stream')
         request.response.setHeader('Content-Length', String(await this.path.sizeInBytes()))
         request.response.body = await this.path.readStream()