[ISSUE #8790] Add Utils for put header to Metadata to avoid duplicate data

[dingshuangxi888]

Which Issue(s) This PR Fixes

Add Utils for put header to gRPC Metadata to avoid duplicate data.

Fixes #8790

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.

Project coverage is 47.34%. Comparing base (782da70) to head (feeac3f).

Files with missing lines	Patch %	Lines
.../apache/rocketmq/proxy/common/utils/GrpcUtils.java	0.00%	9 Missing ⚠️
...etmq/proxy/grpc/interceptor/HeaderInterceptor.java	0.00%	4 Missing ⚠️
...xy/grpc/interceptor/AuthenticationInterceptor.java	0.00%	3 Missing ⚠️
...mq/proxy/grpc/pipeline/AuthenticationPipeline.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8792      +/-   ##
=============================================
- Coverage      47.38%   47.34%   -0.04%     
+ Complexity     11557    11554       -3     
=============================================
  Files           1282     1283       +1     
  Lines          89864    89873       +9     
  Branches       11563    11565       +2     
=============================================
- Hits           42578    42550      -28     
- Misses         42038    42072      +34     
- Partials        5248     5251       +3     

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[lollipopjin]

LGTM