plugins/copilot-lsp: add module

plugins/by-name/copilot-lsp/default.nix

@@ -0,0 +1,24 @@
+{ lib, ... }:
+lib.nixvim.plugins.mkNeovimPlugin {
+  name = "copilot-lsp";
+  package = "copilot-lsp";
+
+  description = ''
+    A lightweight and extensible Neovim plugin for integrating GitHub Copilot's AI-powered
+    code suggestions via Language Server Protocol (LSP).
+
+    > [!NOTE]
+    > This plugin requires the `copilot-language-server`.
+    > Either enable through `copilot-lua` plugin or install manually.
+  '';
+
+  maintainers = [ lib.maintainers.khaneliman ];
+
+  settingsExample = {
+    nes = {
+      move_count_threshold = 5;
+      distance_threshold = 100;
+      reset_on_approaching = false;
+    };
+  };
+}

tests/test-sources/plugins/by-name/copilot-lsp/default.nix

@@ -0,0 +1,18 @@
+{
+  empty = {
+    plugins.copilot-lsp.enable = true;
+  };
+
+  defaults = {
+    plugins.copilot-lsp = {
+      enable = true;
+      settings = {
+        move_count_threshold = 3;
+        distance_threshold = 40;
+        clear_on_large_distance = true;
+        count_horizontal_moves = true;
+        reset_on_approaching = true;
+      };
+    };
+  };
+}