Rethink what Doom loads at startup and manually

Better to simply load what we need, when we need it, rather than set up
autoloads for every litte thing.

modules/lang/php/config.el

@@ -58,6 +58,7 @@
   ;; Make expensive php-extras generation async
   (unless (file-exists-p (concat php-extras-eldoc-functions-file ".el"))
     (message "Generating PHP eldoc files...")
+    (require 'async)
     (async-start `(lambda ()
                     ,(async-inject-variables "\\`\\(load-path\\|php-extras-eldoc-functions-file\\)$")
                     (require 'php-extras-gen-eldoc)