Enhancement

[jackwener]

What type of PR is this?

• enhancement

Which issue(s) this PR fixes:

None

What this PR does / why we need it?

We need add issue template for developer

Checklist：

• Documentation affected （If need to modify document, please label it.)

Release notes：

None `

[Sophie-Xie]

pls add the template, and I am not sure whether need to change the order of title and lables

[jackwener]

@Sophie-Xie PTAL.

Besides, what should I add? Maybe I haven’t considered some content

[codecov-commenter]

Codecov Report

Merging #3223 (5feb163) into master (1de911d) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3223      +/-   ##
==========================================
- Coverage   85.26%   85.25%   -0.02%     
==========================================
  Files        1295     1295              
  Lines      118185   118192       +7     
==========================================
- Hits       100775   100759      -16     
- Misses      17410    17433      +23     

Impacted Files	Coverage Δ
src/kvstore/raftex/Host.cpp	63.68% <0.00%> (-8.94%)	⬇️
...eta/processors/session/SessionManagerProcessor.cpp	74.19% <0.00%> (-4.52%)	⬇️
src/common/thread/GenericWorker.h	92.30% <0.00%> (-3.85%)	⬇️
src/meta/processors/parts/ListHostsProcessor.cpp	72.13% <0.00%> (-2.00%)	⬇️
src/graph/session/GraphSessionManager.cpp	79.88% <0.00%> (-1.73%)	⬇️
src/common/utils/IndexKeyUtils.h	89.68% <0.00%> (-0.91%)	⬇️
src/kvstore/Part.cpp	54.13% <0.00%> (-0.57%)	⬇️
src/meta/processors/BaseProcessor-inl.h	87.21% <0.00%> (-0.57%)	⬇️
src/common/network/NetworkUtils.cpp	80.89% <0.00%> (-0.57%)	⬇️
src/graph/util/SchemaUtil.cpp	92.82% <0.00%> (-0.40%)	⬇️
... and 19 more

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