feat: Add custom scripts and hook based setup

This commit introduces a hook system that allows the user to add custom
modules which can use these hooks to invoke function af specific NvChad
events to allow for extending og functionality

lua/core/mappings.lua

@@ -1,8 +1,8 @@
 local utils = require "core.utils"
+local hooks = require "core.hooks"
 
 local config = utils.load_config()
 local map = utils.map
-
 local maps = config.mappings
 local plugin_maps = maps.plugin
 
@@ -116,6 +116,7 @@ M.misc = function()
    optional_mappings()
    required_mappings()
    user_config_mappings()
+   hooks.run("setup_mappings", map)
 end
 
 -- below are all plugin related mappings