Merge ghc-prim's modules into ghc-internal (#24453)
Merge ghc-prim's modules into ghc-internal. After this MR, ghc-internal is the only package that contains built-in and wired-in stuff. It should be possible to remove some hacks (like using primops defined in ghc-prim and wired-in the RTS to raise exceptions defined in ghc-internal from ghc-bignum hs-boot files instead. This is not done in this MR.
Edited by Sylvain Henry