docs(types): add queryset docstrings

[Yongxuanzhang]

No description provided.

[codecov]

Codecov Report

Merging #1948 (cdbe30d) into master (d33552a) will increase coverage by 1.93%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1948      +/-   ##
==========================================
+ Coverage   82.02%   83.95%   +1.93%     
==========================================
  Files         148      148              
  Lines        7092     7092              
==========================================
+ Hits         5817     5954     +137     
+ Misses       1275     1138     -137     

Impacted Files	Coverage Δ
jina/types/querylang/queryset/dunderkey.py	100.00% <ø> (ø)
jina/types/querylang/queryset/helper.py	92.30% <ø> (ø)
jina/types/querylang/queryset/lookup.py	84.21% <ø> (ø)
jina/drivers/control.py	95.08% <0.00%> (+1.63%)	⬆️
jina/clients/base.py	80.83% <0.00%> (+1.66%)	⬆️
jina/peapods/runtimes/jinad/client.py	82.48% <0.00%> (+2.18%)	⬆️
jina/drivers/convert.py	93.93% <0.00%> (+3.03%)	⬆️
jina/flow/mixin/crud.py	89.28% <0.00%> (+3.57%)	⬆️
jina/peapods/runtimes/zmq/zed.py	91.42% <0.00%> (+3.57%)	⬆️
jina/peapods/runtimes/jinad/__init__.py	95.83% <0.00%> (+4.16%)	⬆️
... and 10 more

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[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 1083, delta to last 3 avg.: +0%
• 🐢🐢 query QPS at 18, delta to last 3 avg.: -6%

Breakdown

Version	Index QPS	Query QPS
current	1083	18
1.0.1	1083	18
1.0.0	1063	20

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