ci: add darglint to ci

[bwanglzu]

Add darglint to perform incremental docstring check.

[codecov]

Codecov Report

Merging #2007 (4a77e66) into master (99fbfe5) will decrease coverage by 2.26%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2007      +/-   ##
==========================================
- Coverage   88.03%   85.76%   -2.27%     
==========================================
  Files         183      202      +19     
  Lines       10460    11021     +561     
==========================================
+ Hits         9208     9452     +244     
- Misses       1252     1569     +317     

Flag	Coverage Δ
daemon	50.38% <ø> (?)
jina	86.03% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
jina/docker/hubapi/local.py	18.39% <0.00%> (-68.97%)	⬇️
jina/docker/hubapi/remote.py	19.73% <0.00%> (-60.53%)	⬇️
jina/docker/helper.py	66.66% <0.00%> (-33.34%)	⬇️
jina/docker/hubio.py	54.02% <0.00%> (-17.54%)	⬇️
jina/parsers/hub/__init__.py	90.00% <0.00%> (-5.00%)	⬇️
jina/peapods/runtimes/jinad/client.py	82.48% <0.00%> (-3.65%)	⬇️
jina/peapods/peas/__init__.py	93.69% <0.00%> (-2.71%)	⬇️
jina/parsers/helper.py	48.66% <0.00%> (-2.00%)	⬇️
jina/docker/checker.py	83.33% <0.00%> (-1.86%)	⬇️
jina/peapods/runtimes/zmq/zed.py	91.48% <0.00%> (-1.42%)	⬇️
... and 22 more

---

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[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 966, delta to last 3 avg.: +0%
• 🐢🐢 query QPS at 13, delta to last 3 avg.: -7%

Breakdown

Version	Index QPS	Query QPS
current	966	13
1.0.4	970	14
1.0.3	967	14

Backed by latency-tracking. Further commits will update this comment.

[cristianmtr]

Is there a way to test it in this PR with a dummy file that we can then remove?

[cristianmtr]

To test

[] add malformed python file
[] add random text file to check that it ignores it

[bwanglzu]

added a test.py, with a success case and a fail case, and a test.txt, this should be ignored.

[cristianmtr]

Issue: it seems like it only checks changed files on the last sha, not on entire PR level.