[APIE-1106] Update kafka topic create/update to support configs file with JSON values

[Yifei Yuan (yyuan097)]

Release Notes

Breaking Changes

• PLACEHOLDER

New Features

• Update kafka topic create to read a properties file containing JSON values.
• Update GetMap helper to skip confluent.*.association keyed configs and preserved the JSON values containing special characters.

Bug Fixes

• PLACEHOLDER

Checklist

• I have successfully built and used a custom CLI binary, without linter issues from this PR.
• I have clearly specified in the What section below whether this PR applies to Confluent Cloud, Confluent Platform, or both.
• I have verified this PR in Confluent Cloud pre-prod or production environment, if applicable.
• I have verified this PR in Confluent Platform on-premises environment, if applicable.
• I have attached manual CLI verification results or screenshots in the Test & Review section below.
• I have added appropriate CLI integration or unit tests for any new or updated commands and functionality.
• I confirm that this PR introduces no breaking changes or backward compatibility issues.
• I have indicated the potential customer impact if something goes wrong in the Blast Radius section below.
• I have put checkmarks below confirming that the feature associated with this PR is enabled in:
  • Confluent Cloud prod
  • Confluent Cloud stag
  • Confluent Platform
  • Check this box if the feature is enabled for certain organizations only

What

Blast Radius

References

#APIE-1106

Test & Review

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