feat(articles): add active_at timestamp & sink concept

[mydearxym]

No description provided.

[codecov]

Codecov Report

Merging #377 (bd7d0b9) into dev (9725bcb) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev     #377   +/-   ##
=======================================
  Coverage   88.18%   88.18%           
=======================================
  Files          95       95           
  Lines        1202     1202           
=======================================
  Hits         1060     1060           
  Misses        142      142           

Impacted Files	Coverage Δ
lib/groupher_server/cms/cms.ex	97.56% <ø> (ø)
lib/groupher_server_web/schema/cms/cms_types.ex	0.00% <ø> (ø)
lib/helper/certification.ex	100.00% <ø> (ø)
lib/helper/error_code.ex	91.66% <ø> (ø)
lib/groupher_server/cms/delegates/article_curd.ex	100.00% <100.00%> (ø)
...b/groupher_server_web/middleware/pagesize_proof.ex	85.71% <100.00%> (ø)
lib/groupher_server_web/resolvers/cms_resolver.ex	93.54% <100.00%> (ø)
lib/helper/query_builder.ex	88.09% <100.00%> (ø)
test/support/factory.ex	86.45% <100.00%> (ø)
... and 4 more

---

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 9725bcb...bd7d0b9. Read the comment docs.