Reduce Emulated PLC metrics

[bhnaphade]

Purpose

Remove redundant dimensions that were added to metrics causing memory issues for OTEL collector
Rename metrics class to be consistent as other helper classes.
Refactor and cleanup

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information