Add coc basic config, not fully working yet

nvim-coc/lua/plugins/utility/indent-blankline.lua

@@ -0,0 +1,9 @@
+return {
+    -- indent lines
+    'lukas-reineke/indent-blankline.nvim',
+    opts = {},
+    main = 'ibl',
+    config = function()
+        require('ibl').setup()
+    end
+}