Records imoc/eoc in the incident template
For https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/15291
This adds information about the current EOC/IMOC to incident issues, which will be filled in for incidents declared with woodhouse.
Note this iteration does not yet include CMOC since we don't configure woodhouse (yet) with that escalation policy. Later we may consider adding it.
These roles will be filled in by woodhouse, after woodhouse!148 (merged) is merged.
Edited by John Jarvis