WebDAV COPY, MOVE and LOCK commands should be added

[MovGP0]

COPY, MOVE, LOCK, UNLOCK, PROPWATCH, and MKCOL are part of the WebDAV protocol and can also be used for REST APIs. The commands should therefore be added.

There are even more WebDAV methods. Instead of adding them, it might be useful to let the user type in a method that is not available.

[subwiz]

it might be useful to let the user type in a method that is not available.

Let me check this possibility. It will also make the tool extensible.

[subwiz]

Can now be done using custom methods.