feat(hz): add (handler.go) more template parameters

[ijackwu]

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hz 生成handler.go 添加参数,ServiceName

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en:add (handler.go) more template parameters
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[li-jin-gou]

Repeat pr? #795

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.04 🎉

Comparison is base (cdcafeb) 75.63% compared to head (7d065ca) 75.67%.

❗ Current head 7d065ca differs from pull request most recent head f7f74e3. Consider uploading reports for the commit f7f74e3 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #800      +/-   ##
===========================================
+ Coverage    75.63%   75.67%   +0.04%     
===========================================
  Files           97       97              
  Lines         9480     9480              
===========================================
+ Hits          7170     7174       +4     
+ Misses        1859     1855       -4     
  Partials       451      451              

see 1 file with indirect coverage changes

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