feat(plugins): add indent-blankline

plugins/indent-blankline.nix

@@ -0,0 +1,41 @@
+# homepage: https://github.com/lukas-reineke/indent-blankline.nvim
+# nixvim doc: https://nix-community.github.io/nixvim/plugins/indent-blankline/index.html
+_:
+
+{
+  # Enable catppuccin colors
+  # https://github.com/catppuccin/nvim/blob/main/lua/catppuccin/groups/integrations/indent_blankline.lua
+  rootOpts.colorschemes.catppuccin.settings.integrations.indent_blankline = true;
+
+  # https://github.com/AstroNvim/AstroNvim/blob/v4.7.7/lua/astronvim/plugins/indent-blankline.lua#L15-L41
+  opts = {
+    enable = true;
+
+    settings = {
+      indent.char = "▏";
+
+      # Disable scope highlighting
+      scope.enabled = false;
+
+      exclude.filetypes = [
+        "aerial"
+        "alpha"
+        "dashboard"
+        "lazy"
+        "mason"
+        "neo-tree"
+        "NvimTree"
+        "neogitstatus"
+        "notify"
+        "startify"
+        "toggleterm"
+        "Trouble"
+      ];
+
+      scope = {
+        show_start = false;
+        show_end = false;
+      };
+    };
+  };
+}