* Move configuration and data to user space (/storage/.config/docker/data).
* Allow building JELOS as root when in a container (temporary).
* Fix missing fonts when building BASE_ONLY.
* Move debug packages to BASE_ONLY builds.
* Add PC/handheld device to separate X86_64 for other purposes.
* Move emulation packages into device options.
* Add Docker packages for future use thanks to @CoreELEC.