meta: Move terminal files to modules

Since all of these files do roughly the same thing (that is, configure
the system in a specific way that a separate file seems necessary), this
should reduce the overall complexity of the project tree.

modules/git/default.nix

@@ -0,0 +1,61 @@
+{ pkgs, ... }:
+
+{
+
+  environment.systemPackages = with pkgs; [ tig git ];
+
+  home-manager.sharedModules = [{
+    xdg.configFile."tig/config".text = ''
+      color cursor black green bold
+      color title-focus black blue bold
+      color title-blur black blue bold
+    '';
+
+    programs.git = {
+      enable = true;
+
+      extraConfig = {
+        include.path = "~/.gituser";
+        commit.gpgsign = true;
+
+        core = {
+          editor = "nvim";
+          autocrlf = false;
+          quotePath = false;
+        };
+
+        web.browser = "librewolf";
+        push.default = "simple";
+        branch.autosetuprebase = "always";
+        init.defaultBranch = "master";
+        rerere.enabled = true;
+        color.ui = true;
+
+        alias = {
+          contrib = "shortlog -n -s";
+          remotes = "remote -v";
+          praise = "blame";
+          verify = "log --show-signature";
+        };
+
+        "color \"diff-highlight\"" = {
+          oldNormal = "red bold";
+          oldHighlight = "red bold";
+          newNormal = "green bold";
+          newHighlight = "green bold";
+        };
+
+        "color \"diff\"" = {
+          meta = "yellow";
+          frag = "magenta bold";
+          commit = "yellow bold";
+          old = "red bold";
+          new = "green bold";
+          whitespace = "red reverse";
+        };
+      };
+
+      diff-so-fancy.enable = true;
+    };
+  }];
+}