feat: support JSON as a log format

[Myroslav-mint]

Summary

What:

Extend logger.error('My error') and give the possibility to pass a JSON (or serializable JS object) as a log value.

Why:

For example, in Python world, they have standardized loggers that accept a custom JSON as a log value that gives a possibility to aggregate logs handily with the help of third-party tools such as DataDog etc.

Acceptance Criteria

Below is a list of tasks that must be completed before this issue can be closed.

• Write documentation
• Write unit tests
• Write integration tests

Example Pseudo Code (for implementation)

logger.error({
  "name": "Custom error",
  "reason": "Not valid data"
})

logger.info({
  "name": "User action",
  "action": "Click the checkout button"
})