feat: add codecompanion

Signed-off-by: Lander Van den Bulcke <landervandenbulcke@gmail.com>

plugins/codecompanion.nix

@@ -0,0 +1,30 @@
+{
+  plugins.codecompanion = {
+    enable = true;
+
+    settings = {
+      display = {
+        action_palette = {
+          opts = {
+            show_default_prompt_library = true;
+          };
+          provider = "default";
+        };
+        chat = {
+          window = {
+            layout = "vertical";
+            opts = {
+              breakindent = true;
+            };
+          };
+        };
+      };
+
+      strategies = {
+        agent.adapter = "gemini";
+        chat.adapter = "gemini";
+        inline.adapter = "gemini";
+      };
+    };
+  };
+}