docs(logger): improvements extensibility & new features

[heitorlessa]

Issue #, if available: #404

Description of changes:

Checklist

• Meet tenets criteria
• Update tests
• Update docs
• PR title follows conventional commit semantics
• Update timestamp value to include timezone
• Bare minimal attrs (level, message, service)
• Update that all keys can be reordered including new ones
• Document UTC support
• Document default JSON fn for unserializable (json.dumps(data, default=json_default))
• Bring your own formatter
• Bring your own handler
• Bringing orjson for those seeking to gain every possible microsecond - json_serializer, json_deserializer
• Update Testing your code section to include how to use stream=sys.stdout

Breaking change checklist

RFC issue #:

• Migration process documented
• Implement warnings (if it can live side by side)

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Merging #415 (3ed5038) into develop (51c4c2d) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #415      +/-   ##
===========================================
- Coverage    99.89%   99.89%   -0.01%     
===========================================
  Files          101      101              
  Lines         3976     3975       -1     
  Branches       198      198              
===========================================
- Hits          3972     3971       -1     
  Misses           1        1              
  Partials         3        3              

Impacted Files	Coverage Δ
aws_lambda_powertools/logging/formatter.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 51c4c2d...3ed5038. Read the comment docs.