add batch delete for nebula-exchange

[EldinZhou]

Add batch delete for nebula-exchange with unit tests for config parsing and execute delete statements

[CLAassistant]

All committers have signed the CLA.

[wey-gu]

Wow, @EldinZhou thanks a lot for the great work!!!

Could you please help sign the CLA?

cc @Nicole00 we have a deletion impl. now!

[EldinZhou]

Ok, no problem！ 获取 Outlook for iOS<https://aka.ms/o0ukef>

…

________________________________ 发件人: Wey Gu ***@***.***> 发送时间: Monday, July 24, 2023 2:49:40 PM 收件人: vesoft-inc/nebula-exchange ***@***.***> 抄送: Zhou Ziyi ***@***.***>; Mention ***@***.***> 主题: Re: [vesoft-inc/nebula-exchange] add batch delete for nebula-exchange (PR #151) - External Email - Wow, @EldinZhou<https://github.com/EldinZhou> thanks a lot for the great work!!! Could you please help sign the CLA? cc @Nicole00<https://github.com/Nicole00> we have a deletion impl. now! ― Reply to this email directly, view it on GitHub<#151 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AP63AEQURLBYIOV5WFURKC3XRYLIJANCNFSM6AAAAAA2VBQHSA>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[Nicole00]

LGTM！Excellent job！

[Nicole00]

please check the compile error and sign cla~

[EldinZhou]

please check the compile error and sign cla~

CLA sign done~

[EldinZhou]

please check the compile error and sign cla~

maybe fix the error caused by typo of writeMode

[codecov-commenter]

Codecov Report

Patch coverage: 45.74% and project coverage change: -0.57% ⚠️

Comparison is base (3f27691) 56.57% compared to head (81d8317) 56.01%.

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Additional details and impacted files

@@             Coverage Diff              @@
##             master     #151      +/-   ##
============================================
- Coverage     56.57%   56.01%   -0.57%     
- Complexity       79       83       +4     
============================================
  Files            18       18              
  Lines          1566     1655      +89     
  Branches        297      315      +18     
============================================
+ Hits            886      927      +41     
- Misses          519      556      +37     
- Partials        161      172      +11     

Files Changed	Coverage Δ
...soft/exchange/common/writer/ServerBaseWriter.scala	28.81% <30.88%> (+2.02%)	⬆️
.../vesoft/exchange/common/config/SchemaConfigs.scala	74.72% <83.33%> (+0.60%)	⬆️
...la/com/vesoft/exchange/common/config/Configs.scala	63.11% <85.00%> (+0.56%)	⬆️

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[Nicole00]

@cooper-lzy Now we can support batch delete function for exchange, the config example can be found in https://github.com/vesoft-inc/nebula-exchange/pull/151/files#diff-a55ebb9daa91e9046a352946a76fff36b82f42d2a31881983c4a57abb2b70f8d.