Move defaults/base-minimal to nixos-modules/system

nixos-modules/system/applications.nix

@@ -0,0 +1,55 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  environment.systemPackages =
+    with pkgs;
+    [
+      vim
+      tmux
+      killall
+      bc
+      rename
+      wipe
+      gnupg
+      ripgrep
+    ]
+    ++ [
+      nix-index
+      nix-diff
+    ]
+    ++ [
+      autojump
+      powerline-go
+    ]
+    ++ [
+      # File Utilities
+      ack
+      unzip
+      iotop
+      tree
+      vim
+      vimPlugins.pathogen
+      vimPlugins.airline
+      git
+      git-lfs
+    ]
+    ++ [
+      # Filesystem & Disk Utilities
+      parted
+    ]
+    ++ [
+      # Networking Utilities
+      nmap
+      bind
+      curl
+      wget
+      rsync
+      iftop
+      mailutils
+    ];
+}