f35b343852
Splitting fish into multiple packages was what the downstream Debian packaging does, but it provides minimal benefit to end-users installing from the fish repositories and in some cases made it harder. The only benefit was a slightly reduced size on disk for download repositories. Closes #7845. Reverts 45ae726d4f66398b10fda2c281e730fb6bda2a56 and solves #3053 through a Conflict with fish-common.