Expected publicly documented methods of ArcballControls to be public

[IkonOne]

• three version: ^0.164.1
• @types/three version: ^0.164.1
• three-stdlib version: ^2.30.1

Problem description:

Many public and documented methods on ArcballControls are marked private in three-stdlib.

Relevant code:

...

Suggested solution:

Replace the private access modifier with public.

Are these marked private intentionally?

[IkonOne]

related: #372

[IkonOne]

I think this is just an oversight. Can someone please confirm that it is and I can make a PR.