- rebrand group to domain
- move IAM to the API (rest and graph) for enforcing "process:" rules
- add abstraction layer for restream store in order to decouple internal format from format on disk
- move playout handler into restreamHandler
- remove user from restream interface
- add TaskID type that includes the process id and its domain
1. Allow variables in placeholders for parameter values, e.g.
{rtmp,name=$processid}. The variable starts with a $ letter.
The recognized variables are provided with the Replace func.
2. The template func recieves the process config and the name of
the section where this placeholder is located, i.e. "global",
"input", or "output".
If a value for a placeholder needs escaping, add the character to
escape with an "^" to the name of the placeholder, e.g. {memfs^:}.
This will escape all occurences of ":" in the value for {memfs}
with a "\".
