Add autoload to all-packages, mark autoload and require as preloaded, and make sure their files are listed in the lib

Author: dpvc

components/src/input/tex/extensions/all-packages/all-packages.js

@@ -1,15 +1,19 @@
 import './lib/all-packages.js';
 
 import {AllPackages} from '../../../../../../mathjax3/input/tex/AllPackages.js';
+import '../../../../../../mathjax3/input/tex/autoload/AutoloadConfiguration.js';
 import '../../../../../../mathjax3/input/tex/require/RequireConfiguration.js';
 import {insert} from '../../../../../../mathjax3/util/Options.js';
 
+if (MathJax.loader) {
+    MathJax.loader.preLoad('[tex]/autoload', '[tex]/require');
+}
 if (MathJax.startup) {
     if (!MathJax.config.tex) {
         MathJax.config.tex = {};
     }
     let packages = MathJax.config.tex.packages;
-    MathJax.config.tex.packages = ['require',...AllPackages];
+    MathJax.config.tex.packages = ['autoload', 'require', ...AllPackages];
     if (packages) {
         insert(MathJax.config.tex, {packages});
     }

components/src/input/tex/extensions/all-packages/build.json

@@ -1,5 +1,9 @@
 {
     "component": "input/tex/extensions/all-packages",
-    "targets": ["input/tex/AllPackages.ts"]
+    "targets": [
+        "input/tex/AllPackages.ts",
+        "input/tex/autoload",
+        "input/tex/require"
+    ]
 }