resourceloader: Remove addModuleScripts, and deprecate getModuleScripts.

resourceloader: Remove addModuleScripts, and deprecate getModuleScripts.

The addModuleScripts() methods were deprecated in 1.31 and 1.32,
these are now removed.

The getModuleScripts() are now deprecated as well, always returning
an empty array. To be removed in 1.34.

Depends on commits for bundled/wmf-deployed extensions that
remove the last few remaining callers to the deprecated functions
in: 3D, Collection, Flow, GlobalUserPage, and Wikibase.

Bug: T188689
Depends-On: If9f0bc6aef85117587fa1929f34f8861c8d80314
Depends-On: Ia8d41b97fbf6822f5f8f7ac889408acce1ac9a3a
Depends-On: I503b919739ea474ff33726815b0da55e2f7e2724
Depends-On: I236ef637fd03b810a46eb361e25067a037e9d183
Depends-On: I62e17779753b977a452cc0c9694947941e999cc3
Change-Id: I5a19b8f164ccf666485d2971202194b747f882df