Switch to new lazy-based config

Still a bit WIP. Gradually adding back old plugins and config from old config.

lua/plugins/numb.lua

@@ -0,0 +1,11 @@
+return {
+  "nacro90/numb.nvim",
+  config = function()
+    require("numb").setup({
+      show_numbers = true, -- Enable 'number' for the window while peeking
+      show_cursorline = true, -- Enable 'cursorline' for the window while peeking
+      number_only = false, -- Peek only when the command is only a number instead of when it starts with a number
+      centered_peeking = true, -- Peeked line will be centered releative to window
+    })
+  end,
+}