refactor: delete old Ansible configuration

- Remove the Ansible files.
- Move the Nix files to the root level of the repository.

Refs: #39

configuration/pop-os/default.nix

@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ../../home-manager/modules/common.nix
+    ../../home-manager/modules/git.nix
+    ../../home-manager/modules/home-manager.nix
+    ../../home-manager/modules/tmux.nix
+    ../../home-manager/modules/zsh.nix
+  ];
+
+  fonts.fontconfig.enable = true;
+
+  home.packages = with pkgs; [
+    docker
+    docker-compose
+    jetbrains-mono
+  ];
+}

configuration/wsl2/default.nix

@@ -0,0 +1,11 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ../../home-manager/modules/common.nix
+    ../../home-manager/modules/git.nix
+    ../../home-manager/modules/home-manager.nix
+    ../../home-manager/modules/tmux.nix
+    ../../home-manager/modules/zsh.nix
+  ];
+}