Add is_system to contact groups, filter groups by group_type = M|Q|U

[rowanseymour]

No description provided.

[codecov]

Codecov Report

Merging #607 (8a04898) into main (6177ddc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #607   +/-   ##
=======================================
  Coverage   62.20%   62.20%           
=======================================
  Files         126      126           
  Lines        8880     8880           
=======================================
  Hits         5524     5524           
  Misses       2495     2495           
  Partials      861      861           

Impacted Files	Coverage Δ
core/models/contacts.go	65.12% <ø> (ø)
core/models/groups.go	58.75% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6177ddc...8a04898. Read the comment docs.