Replace imv with swayimg

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/b98a4e1746acceb92c509bc496ef3d0e5ad8d4aa' (2024-02-18)
  → 'github:NixOS/nixpkgs/0e74ca98a74bc7270d28838369593635a5db3260' (2024-02-21)

flake.lock

@@ -305,11 +305,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1708296515,
+        "lastModified": 1708475490,
-        "narHash": "sha256-FyF489fYNAUy7b6dkYV6rGPyzp+4tThhr80KNAaF/yY=",
+        "narHash": "sha256-g1v0TsWBQPX97ziznfJdWhgMyMGtoBFs102xSYO4syU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b98a4e1746acceb92c509bc496ef3d0e5ad8d4aa",
+        "rev": "0e74ca98a74bc7270d28838369593635a5db3260",
         "type": "github"
       },
       "original": {

modules/gui.nix

@@ -31,7 +31,7 @@ with pkgs;
       wl-clipboard
       grim
       slurp
-      imv
+      swayimg
       kanshi
       kitty
       qt5.qtwayland