Implement ability to use built-in datadog logging support

[s-vitaliy]

Part of #61

Scope

Implemented:

• Logging to datadog using push mechanism with sl4j
• Logging to console with simple format

Additional changes:

• To be able to enrich the sl4j logs created directly and the zio logs we should do the follwoing:
  • append properties to zio logger
  • addend properties to java MDC
    To be able to add that metadata to both log sources in the simple manner, I created the Enircher interface and it's implementations that should be used in main.scala in the logging bootstrap process.

Checklist

• GitHub issue exists for this change.
• Unit tests added and they pass.
• Line Coverage is at least 80%.
• Review requested on latest commit.