misc changes

xmonad: added new layout+keybinds, removed useless code
neovim: minor changes
hosts/satori: changed kernel to zen again
home/services and home/programs: minor changes
overlays: changed picom src and other minor changes

modules/nvim/default.nix

@@ -29,7 +29,7 @@
           nvim-tree-lua
           vim-vsnip
           nvim-treesitter
-          vim-nix
+          vim-polyglot
           (gruvbox.overrideAttrs (oa: { patches = [ ./gruvbox.patch ]; }))
         ];
       };