[Feature Request] Request move gif to Integration library.

[peerless2012]

Glide Version: 4.14.2

Integration libraries: okhttp3-4.14.2

Device/Android Version: 14

Issue details / Repro steps / Use case background: I use giflib to decode gif in my project.

I think most people may not need to use gif in their project, if move gif to Integration library, user can include this as they need, and glide can keep the code clean and tiny.