plugins/utils: move to by-name

plugins/by-name/quickmath/default.nix

@@ -0,0 +1,46 @@
+{
+  lib,
+  helpers,
+  config,
+  pkgs,
+  ...
+}:
+with lib;
+let
+  cfg = config.plugins.quickmath;
+in
+{
+  options.plugins.quickmath = {
+    enable = mkEnableOption "quickmath.nvim";
+
+    package = lib.mkPackageOption pkgs "quickmath.nvim" {
+      default = [
+        "vimPlugins"
+        "quickmath-nvim"
+      ];
+    };
+
+    keymap = {
+      key = helpers.mkNullOrOption types.str "Keymap to run the `:Quickmath` command.";
+
+      silent = mkOption {
+        type = types.bool;
+        description = "Whether the quickmath keymap should be silent.";
+        default = false;
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    extraPlugins = [ cfg.package ];
+
+    keymaps =
+      with cfg.keymap;
+      optional (key != null) {
+        mode = "n";
+        inherit key;
+        action = ":Quickmath<CR>";
+        options.silent = cfg.keymap.silent;
+      };
+  };
+}