SHAA: Backend: Hosts summary and hosts filtering API changes

[JordanMontgomery]

Related user story

#39063

Task

Add filtering parameters dep_profile_error(boolean) and dep_assign_profile_response(string) to /hosts endpoint as described in https://github.com/fleetdm/fleet/pull/40722/changes#diff-7246bc304b15c8865ed8eaa205e9c244d0a0314e4bae60cf553dc06147c38b64R2954

Add dep_assign_error_count to hosts summary endpoint as specified in https://github.com/fleetdm/fleet/pull/40722/changes#diff-7246bc304b15c8865ed8eaa205e9c244d0a0314e4bae60cf553dc06147c38b64R3312

Condition of satisfaction

Hosts endpoint allows filtering both by hosts with DEP profile error and filtering by the specific dep_assign_profile_response values(including success, though UI won't use that right now AFAIK).

Hosts summary returns a count of hosts with DEP errors so it can be displayed if non-zero