feat: change channel parameter hostname, port to grpc_adress

[felicijus]

Simplify channel creation parameters to reflect Camunda exported .env file/variables. This means a combinde variable for hostname and port.

Changes

• create_insecure_channel - grpc_adress parameter instead of hostname, port
• create_secure_channel - grpc_adress parameter instead of hostname, port
• utils ro reflect changes

API Updates

New Features (required)

Use one parameter grpc_address to provide Zeebe Address.

Deprecations (required)

Usage of hostname and port for channel creation.

Enhancements (optional)

None

Checklist

• Unit tests
• Documentation
• Examples

References (optional)

https://javadoc.io/doc/io.camunda/zeebe-client-java/latest/io/camunda/zeebe/client/ZeebeClientBuilder.html

Connects #468
Resolves #497

[coveralls]

Pull Request Test Coverage Report for Build 11127508903

Details

• 8 of 8 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.007%) to 96.615%

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Totals
Change from base Build 11100841235:	-0.007%
Covered Lines:	999
Relevant Lines:	1034

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💛 - Coveralls