💥 Change first arg of load! macro

load!'s first argument is no longer a symbol (that will cause
void-variable errors now) to save on unnecessary interning and simplify
compile-time logic. It accepts any valid form that evaluates to a string
now.

If you use load!, you need to change its argument to a string!

e.g. (load! +my-module) => (load! "+my-module")

core/autoload/packages.el

@@ -1,6 +1,6 @@
 ;;; core/autoload/packages.el -*- lexical-binding: t; -*-
 
-(load! cache)
+(load! "cache")
 
 ;;; Private functions