update implementation.md with Kedro extension

[noklam]

Description (e.g. "Related to ...", etc.)

Added a new extension base on pygls. Thanks a lot @alcarney for guiding.

Code review checklist (for code reviewer to complete)

• Pull request represents a single change (i.e. not fixing disparate/unrelated things in a single PR)
• Title summarizes what is changing
• Commit messages are meaningful (see this for details)
• Tests have been included and/or updated, as appropriate
• Docstrings have been included and/or updated, as appropriate
• Standalone docs have been updated accordingly

[noklam]

I see myself forgetting the commit message format again so it's likely to fail again😅 will update when I have access to computer