Refactor Doom core init process (again)

- Eager-load all core autoloaded libraries if autoloads file isn't
  present.
- Renames functions to be more descriptive of their true purpose:
  - doom-initialize-autoloads -> doom-load-autoloads-file
  - doom-load-env-vars -> doom-load-envvars-file
- Use doom-module-p instead of featurep! for backend use (the latter is
  mainly syntax sugar for module use, and evaluates at compile/expansion
  time, which may cause hash-table-p errors early in the startup
  process).
- Reorder plist library to prevent load order race condition with the
  functions using the macros that haven't been defined yet.

core/cli/autoloads.el

@@ -270,7 +270,7 @@ Run this whenever your `doom!' block, or a module autoload file, is modified."
                             return t)))
          (ignore
           (print! (success "Skipping core autoloads, they are up-to-date"))
-          (doom-initialize-autoloads doom-autoload-file))
+          (doom-load-autoloads-file doom-autoload-file))
        (print! (start "Regenerating core autoloads file"))
 
        (if (doom-delete-autoloads-file doom-autoload-file)
@@ -393,7 +393,7 @@ This should be run whenever your `doom!' block or update your packages."
                           return t)))
        (ignore
         (print! (success "Skipping package autoloads, they are up-to-date"))
-        (doom-initialize-autoloads doom-package-autoload-file))
+        (doom-load-autoloads-file doom-package-autoload-file))
      (let (;; The following bindings are in `package-generate-autoloads'.
            ;; Presumably for a good reason, so I just copied them
            (noninteractive t)

core/cli/byte-compile.el

@@ -91,8 +91,8 @@ If RECOMPILE-P is non-nil, only recompile out-of-date files."
 
       ;; But first we must be sure that Doom and your private config have been
       ;; fully loaded. Which usually aren't so in an noninteractive session.
-      (doom-initialize-autoloads doom-autoload-file)
-      (doom-initialize-autoloads doom-package-autoload-file)
+      (doom-load-autoloads-file doom-autoload-file)
+      (doom-load-autoloads-file doom-package-autoload-file)
 
       ;;
       (unless target-dirs

core/cli/env.el

@@ -98,7 +98,7 @@ default, on Linux, this is '$SHELL -ic /usr/bin/env'. Variables in
           "#\n"
           "# It is NOT safe to edit this file. Changes will be overwritten next time that\n"
           "# `doom env refresh` is executed. Alternatively, create your own env file and\n"
-          "# load it with `(doom-load-env-vars FILE)`.\n"
+          "# load it with `(doom-load-envvars-file FILE)`.\n"
           "#\n"
           "# To auto-regenerate this file when `doom reload` is run, use `doom env auto' or\n"
           "# set DOOMENV=1 in your shell environment/config.\n"

core/cli/test.el

@@ -16,8 +16,8 @@ current directory."
         (patterns nil)
         (args command-line-args-left)
         (doom-modules (doom-modules)))
-    (doom-initialize-autoloads doom-autoload-file)
-    (doom-initialize-autoloads doom-package-autoload-file)
+    (doom-load-autoloads-file doom-autoload-file)
+    (doom-load-autoloads-file doom-package-autoload-file)
     (while args
       (cond
        ;; ((member (car args) '("--traceback"))