NOISSUE - Select from port range

[SammyOina]

What type of PR is this?

This is a feature that adds manager to select fwd port from a range

What does this do?

• New Features

  • Introduced enhanced error handling during service initialization.
  • Added new environment variables for improved service configurability, including COCOS_JAEGER_TRACE_RATIO and MANAGER_BACKEND_MEASUREMENT_BINARY.
  • Implemented configurable port range for improved port management.

• Bug Fixes

  • Improved error handling in service creation and port allocation processes.

• Documentation

  • Expanded and clarified README documentation for environment variables, enhancing user comprehension.

• Tests

  • Updated test cases to ensure proper error handling and deterministic behavior in port allocation tests.

Which issue(s) does this PR fix/relate to?

Have you included tests for your changes?

No

Did you document any new/modified feature?

Yes

Notes