WDC motion proposal

[sebastianotronto]

Add the definition of Community member in the Definitions motion and align other motions with the CoC.

Add the possibility to preemptively suspend a community member who is deemed a threat to the safety of other members.

[dunkOnIT]

(Sorry, ran the workflow by accident. Should if it needs to be run at this point and I'll restart.)

[Epride]

Closing due to the Board introduction motions proposals to cover off WDC's requests in line with the standard protocol