Add Debian package registry (#24426)

Co-authored-by: @awkwardbunny

This PR adds a Debian package registry.
You can follow [this
tutorial](https://www.baeldung.com/linux/create-debian-package) to build
a *.deb package for testing.
Source packages are not supported at the moment and I did not find
documentation of the architecture "all" and how these packages should be
treated.


![grafik](https://user-images.githubusercontent.com/1666336/218126879-eb80a866-775c-4c8e-8529-5797203a64e6.png)

Part of #20751.

Revised copy of #22854.

---------

Co-authored-by: Brian Hong <brian@hongs.me>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Giteabot <teabot@gitea.io>

routers/api/packages/npm/npm.go

@@ -189,7 +189,7 @@ func UploadPackage(ctx *context.Context) {
 		}
 	}
 
-	buf, err := packages_module.CreateHashedBufferFromReader(bytes.NewReader(npmPackage.Data), 32*1024*1024)
+	buf, err := packages_module.CreateHashedBufferFromReader(bytes.NewReader(npmPackage.Data))
 	if err != nil {
 		apiError(ctx, http.StatusInternalServerError, err)
 		return