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/hooks.lua

@@ -0,0 +1,38 @@
+local hooks, M = {}, {};
+local allowed_hooks = {
+  "install_plugins",
+  "setup_mappings",
+  "ready",
+}
+
+local function has_value (tab, val)
+  for _, value in ipairs(tab) do
+    if value == val then
+      return true
+    end
+  end
+
+  return false
+end
+
+M.add = function(name, fn)
+  if not(has_value(allowed_hooks, name)) then
+    error("Custom lua uses unallowed hook " .. name)
+  end
+  if hooks[name] == nil then
+    hooks[name] = {}
+  end
+  table.insert(hooks[name], fn);
+end
+
+M.run = function(name, args)
+  if hooks[name] == nil then
+    return;
+  end
+
+  for _, hook in pairs(hooks[name]) do
+    hook(args)
+  end
+end
+
+return M;