Add Kafka metadata opt-in setting to escapeHeaders

[antontroshin]

Description

In continuation of the issue #3503, make the escaping headers Opt-in via the component setting

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #3503

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation / Created issue in the https://github.com/dapr/docs/ repo: dapr/docs#[issue number]

[yaron2]

Please add the new metadata field to the metadata.yaml file

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-1.14@753d09e). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
common/component/kafka/consumer.go	84.61%	2 Missing ⚠️
common/component/kafka/kafka.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##             release-1.14    #3524   +/-   ##
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  Coverage                ?   30.22%           
===============================================
  Files                   ?      304           
  Lines                   ?    37860           
  Branches                ?        0           
===============================================
  Hits                    ?    11442           
  Misses                  ?    25447           
  Partials                ?      971           

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