feat: configure navic and integrate with lualine + update flake update action (#11)

Configured Navic and integrated it with Lualine. This provides context
about the code that is being worked on.

Also added a PAT to be able to create a PR when the Flake Update Github
action runs.

config/default.nix

@@ -25,6 +25,7 @@ _: {
     ./plugins/editor/indent-blankline.nix
     ./plugins/editor/todo-comments.nix
     ./plugins/editor/copilot-chat.nix
+    ./plugins/editor/navic.nix
 
     # UI plugins
     ./plugins/ui/bufferline.nix

config/plugins/editor/navic.nix

@@ -0,0 +1,38 @@
+_: {
+  plugins.navic = {
+    enable = true;
+    separator = "  ";
+    highlight = true;
+    depthLimit = 5;
+    lsp = {
+      autoAttach = true;
+    };
+    icons = {
+      Array = "󱃵  ";
+      Boolean = "  ";
+      Class = "  ";
+      Constant = "  ";
+      Constructor = "  ";
+      Enum = " ";
+      EnumMember = " ";
+      Event = " ";
+      Field = "󰽏 ";
+      File = " ";
+      Function = "󰡱 ";
+      Interface = " ";
+      Key = "  ";
+      Method = " ";
+      Module = "󰕳 ";
+      Namespace = " ";
+      Null = "󰟢 ";
+      Number = " ";
+      Object = "  ";
+      Operator = " ";
+      Package = "󰏖 ";
+      String = " ";
+      Struct = " ";
+      TypeParameter = " ";
+      Variable = " ";
+    };
+  };
+}

config/plugins/themes/default.nix

@@ -28,6 +28,10 @@
           illuminate = {
             enabled = true;
           };
+          navic = {
+            enabled = true;
+            custom_bg = "NONE";
+          };
           treesitter = true;
           telescope.enabled = true;
           indent_blankline.enabled = true;

config/plugins/ui/lualine.nix

@@ -3,6 +3,7 @@ _: {
     enable = true;
     globalstatus = true;
     extensions = [
+      "fzf"
       "neo-tree"
     ];
     disabledFiletypes = {
@@ -53,10 +54,13 @@ _: {
         }
       ];
       lualine_x = [
+        {
+          name = "navic";
+        }
         {
           name = "diff";
           extraConfig = {
-            symbos = {
+            symbols = {
               added = " ";
               modified = " ";
               removed = " ";