Refactor codebase to use nix modules

hmModules/apps/terminal-emulators/alacritty/default.nix

@@ -0,0 +1,39 @@
+{ config, pkgs, lib, ... }:
+
+{
+  options.alacritty = {
+    enable = lib.mkEnableOption "Enables alacritty";
+    font = lib.mkOption { default = ""; };
+    font_size = lib.mkOption { default = 18; };
+  };
+
+  config = lib.mkIf config.alacritty.enable {
+    programs.alacritty.enable = true;
+
+    programs.alacritty.settings = {
+      font = let fam = config.alacritty.font; in {
+        normal = {
+          family = fam;
+          style = "Regular";
+        };
+        bold = {
+          family = fam;
+          style = "Bold";
+        };
+        italic = {
+          family = fam;
+          style = "Italic";
+        };
+        bold_italic = {
+          family = fam;
+          style = "Bold Italic";
+        };
+        offset = {
+          x = 0;
+          y = 0;
+        };
+        size = config.alacritty.font_size;
+      };
+    };
+  };
+}