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/nvidia-offload.nix

@@ -1,6 +1,6 @@
 {config, pkgs, ... }:
 let
-  nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''
+  nvidia-offload = pkgs.writeShellScriptBin "nvi" ''
     export __NV_PRIME_RENDER_OFFLOAD=1
     export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
     export __GLX_VENDOR_LIBRARY_NAME=nvidia
@@ -25,6 +25,10 @@ in
           nvidiaBusId = "PCI:1:0:0";
         };
         modesetting = { enable = true; };
+        powerManagement = {
+          enable = true;
+          finegrained = true;
+        };
       };
     };
     services.xserver.videoDrivers = [ "nvidia" ];