nvim: split plugins into multiple files

.config/nvim/lua/plugins/indent-blankline.lua

@@ -0,0 +1,11 @@
+return {
+  -- show indentation lines
+  {
+    'lukas-reineke/indent-blankline.nvim',
+    event = "BufReadPre",
+    opts = {
+      show_current_context = true,
+      show_current_context_start = true
+    }
+  }
+}