chore(logger): extract logger creation into protected method

[dreamorosi]

Description of your changes

This PR introduces a minor internal change into the Logger class that, in its current implementation, can help customers who want to customize the utility by extending/subclassing the Logger class.

Prior to this PR when creating a new child logger, the creation of a new Logger instance was inline inside the createChild method. Customers wanting to extend the Logger by creating their own subclass were having a difficult time doing so because the child loggers would be creating using the original Logger class.

By extracting that logic into its own createLogger protected method customers can override the method and instantiate their own custom logger when creating a child.

Warning
Extending or depending on internal method comes with risks. Powertools for AWS is committed to avoid intentional breaking changes in public APIs and interfaces, however we can't guarantee that internal methods or implementation details won't change in the event of a refactor or new feature addition.

Related issues, RFCs

Issue number: #1307

Checklist

• My changes meet the tenets criteria
• I have performed a self-review of my own code
• I have commented my code where necessary, particularly in areas that should be flagged with a TODO, or hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my change is effective and works
• The PR title follows the conventional commit semantics

Breaking change checklist

Is it a breaking change?: NO

• I have documented the migration process
• I have added, implemented necessary warnings (if it can live side by side)

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[dreamorosi]

Successful integration test run: https://github.com/aws-powertools/powertools-lambda-typescript/actions/runs/5741211172