Draft: analytics: webrequest: actor: add dq job

Add a new data analyzer dag to compute quality metrics on actor signature data.

These metrics are reported to assist the migration (by tracking possible regression) to HAProxy.

Sister MR to https://gerrit.wikimedia.org/r/c/analytics/refinery/source/+/1019867/

Dependnecies

[] refinery-source 0.2.36 (not yet deployed). Tagging this MR as Draft to prevent accidental merges.

Bug: T351117

Bug: T362783

Bug: T362785