refactor!: Replace internal topics from config with new constants

[lenny-goodell]

BREAKING CHANGE: Internal topics no longer configurable, except the base topic.

Requires https://github.com/edgexfoundry/device-snmp-go/pull/255 to be merged first

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/device-snmp-go/blob/main/.github/Contributing.md

PR Checklist

Please check if your PR fulfills the following requirements:

• [ ] I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• [x] I am not introducing a new dependency (add notes below if you are)
• [ ] I have added unit tests for the new feature or bug fix (if not, why?) Existing suffice
• [x] I have fully tested (add details below) this the new feature or bug fix (if not, why?)
• [ ] I have opened a PR for the related docs change (if not, why?) TBD

Testing Instructions

Run non-secure EdgeX stack Build and run device service locally with -cp (kill and restart for hybrid mode) Verify the log has the following start-up :

msg="Subscribing to command requests on topic: edgex/device/command/request/device-mqtt/#"
msg="Responses to command requests will be published on topic: edgex/response/device-mqtt/<requestId>"
"Subscribing to System Events on topic: edgex/system-events/core-metadata/+/+/device-mqtt/#

New Dependency Instructions (If applicable)

[codecov-commenter]

Codecov Report

Merging #256 (c1dd071) into main (d33e94f) will not change coverage. The diff coverage is n/a.

:mega: This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@          Coverage Diff          @@
##            main    #256   +/-   ##
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  Coverage   0.00%   0.00%           
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  Files          2       2           
  Lines        200     200           
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  Misses       200     200           

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