STATE_CONTACT for HMIP-SWDO-I

[FaHuSchmidt]

This a follow up for issue #5786
I've just struggled with the contact item for HMIP-SWDO-I and found the older issues for SWDO and SWDO-I.
I can use the channel STATE_CONTACT in my items file and it works with SWDO-I, but i haven't seen anything about this virtual channel since i found the issues.
I'm quite new to Openhab so i don't really know if there is anything missing and if it should appear at the thing view from PaperUI, as it doesn't with Openhab 2.4.0 release build or 2.4.0 snapshot (build 1462).
The VS Code plugin also only adds the channel STATE as string type and the virtual channel is not listed at binding documentation.

[5iver]

This repo is no longer maintained... see #6883. ESH has been reintegrated into openhab-core. You might want to try posting in the OH forum.