Add Debian package registry (#22854)

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.

---------

Co-authored-by: Brian Hong <brian@hongs.me>
Co-authored-by: techknowlogick <techknowlogick@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())