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>

modules/packages/hashed_buffer_test.go

@@ -26,7 +26,7 @@ func TestHashedBuffer(t *testing.T) {
 	}
 
 	for _, c := range cases {
-		buf, err := CreateHashedBufferFromReader(strings.NewReader(c.Data), c.MaxMemorySize)
+		buf, err := CreateHashedBufferFromReaderWithSize(strings.NewReader(c.Data), c.MaxMemorySize)
 		assert.NoError(t, err)
 
 		assert.EqualValues(t, len(c.Data), buf.Size())