plugins/cspell: add module

Closes #2812

plugins/by-name/cspell/default.nix

@@ -0,0 +1,15 @@
+{ lib, ... }:
+lib.nixvim.plugins.mkNeovimPlugin {
+  name = "cspell";
+  package = "cspell-nvim";
+  description = "cspell diagnostics and code actions for none-ls.";
+
+  maintainers = [ lib.maintainers.khaneliman ];
+
+  dependencies = [
+    "cspell"
+  ];
+
+  callSetup = false;
+  hasSettings = false;
+}

tests/test-sources/plugins/by-name/cspell/default.nix

@@ -0,0 +1,9 @@
+{
+  empty = {
+    plugins.cspell.enable = true;
+  };
+
+  defaults = {
+    plugins.cspell.enable = true;
+  };
+}