added some more configs, got a file tree working

lua/custom/plugins/init.lua

@@ -2,4 +2,22 @@
 --  I promise not to create any merge conflicts in this directory :)
 --
 -- See the kickstart.nvim README for more information
-return {}
+return {
+  {
+    'nvim-tree/nvim-tree.lua',
+    opts = {
+      sort = {
+        sorter = 'case_sensitive',
+      },
+      view = {
+        width = 30,
+      },
+      renderer = {
+        group_empty = true,
+      },
+      filters = {
+        dotfiles = true,
+      },
+    },
+  },
+}