[Tooling] Investigate the creation of a variadic function for the log labels

[Gustavobelfort]

Objective

In telemetry/prometheus_module.go we have a variadic function that takes in any number of labels.

Investigate the opportunity to update the current SetFields function in the logging module to SetFieldsMap and have another SetFields function that accepts an even number of any parameters.

Origin Document

• The following comment from the PR that introduced logging in the codebase: [Telemetry] Apply shared logging module #420 (comment)

Goals

• Make it easier to log a large number of variables in place w/ and w/o creating an inline map

Deliverable

• Convert SetFields to SetFieldsMap
• Introduce a new SetFields(...any) function that accepts an even number of parameter
• Error checking (e.g. panic) to prevent accepting an odd number of labels as a valid value
• Optionally update some logs using SetFieldsMap to use the new approach

Non-goals / Non-deliverables

• Updating all existing logs in the codebase
• Adding new logs

General issue deliverables

• Update the appropriate CHANGELOG(s)
• Update any relevant local/global README(s)

Testing Methodology

• All tests: make test_all
• LocalNet: verify a LocalNet is still functioning correctly by following the instructions at docs/development/README.md

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Creator: @Gustavobelfort
Co-Owners: @Olshansk