Bundle and minify .exports.js files. (#3036)

* move all exports.js into src/js

* finalize the sort of this

* and it works

* add test.ts to gitignore

* okay

* convert some to ts just to show

* finish up

* fixup makefile

* minify syntax in dev

* finish rebase

* dont minify all modules

* merge

* finish rebase merge

* flaky test that hangs

tsconfig.json

@@ -18,10 +18,8 @@
     "test",
     "src/deps",
     "bun-webkit",
-    // JavaScriptCore builtins use a non-standard "@" symbol to indicate a private identifier which no other tool supports
-    "src/bun.js/builtins",
     "src/bun.js/WebKit",
     "src/api/demo",
-    "node_modules",
+    "node_modules"
   ]
 }