Aubit 4GL SVN-Code

The remaining 38 verbs, with field names and order transcribed from the
format strings in lib/libui/ui_json. All 66 verbs the C runtime emits
now have a .NET counterpart.

A coverage test guards it: it lists every verb the C emits and fails if
one has no .NET message, which is the only way a protocol split across
two runtimes stays in step. A second test rejects two messages claiming
the same verb - which immediately caught WAITFOREVENT being declared
twice. The C emits it both bare and with CONTEXT/CACHED, so one type now
covers both and omits the fields rather than sending nulls.