Migrate configuration to nixvim

config/options.nix

@@ -0,0 +1,18 @@
+{ ... }:
+
+{
+  config.opts = {
+    # General
+    number = true;              # Display line numbers.
+    showmode = false;           # Do not show the mode we're editing in.
+    swapfile = false;           # Disable vim swapfile.
+    clipboard = "unnamedplus";  # Use the clipboard for all operations.
+
+    # Tabs & Spaces
+    tabstop = 2;        # Set the width of a tab character.
+    softtabstop = 2;    # Set the number of columns for a tab.
+    shiftwidth = 2;     # Set the number of spaces for each step of (auto)indent.
+    expandtab = true;   # Convert tabs to spaces.
+  };
+}
+