Add an empty %files section to main package
(cherry picked from commit c3ef1f56f6b1fc4d7e0accaa2178df078f2afd08)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>
Simplifies a number of aspects of the RPM build, including moving
.copr/Makefile into the "fedora/" folder (and leaving a symlink),
removing the jellyfin-web build components, and renaming it
jellyfin-server like Debian did.