docs: base documentation

[dreamorosi]

Description of your changes

Created skeleton of documentation using the Python version as reference.

Includes:

• Homepage (see differences below)
• Core modules (tracer, metrics, logger)
• Analytics script + updated runtime key
• Medias & folder structure
• MKDocs config file (mkdocs.yml)
• Details on how to run it locally in CONTRIBUTING.md
• NPM scripts to run locally

Differences:

• Homepage sections empty/removed/amended:
• • Install
• • Lambda Layer
• • Quick getting started
• • Features (contains only relevant ones)
• • Environment variables (contains only relevant ones)
• • Debug mode
• Scripts to run locally rely on npm rather than make like in Python

How to verify this change

Build docker container locally & run docs, see package.json scripts.

Related issues, RFCs

#152

PR status

Is this ready for review?: YES
Is it a breaking change?: NO

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
• The code coverage hasn't decreased
• I have added tests that prove my change is effective and works
• New and existing unit tests pass locally and in Github Actions
• Any dependent changes have been merged and published in downstream module
• The PR title follows the conventional commit semantics

Breaking change checklist

N/A

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

[saragerion]

Some minor comments / questions, but it already looks good

[ijemmy]

I've added the CHANGELOG.md file. Mkdocs will break without it.

[saragerion]

LGTM