feat(menuV2): Implementation, green diff with ECL - FRONT-991

[planctus]

PR description

To reproduce the diff with the ECL markup:
render the component
yarn check:component ec menu
run the ecl-diff script:
yarn ecl-diff ec

the choiches you have to make are:

• "menu as the component
• "en" as the twig variant
• choose "navigation" from the subsections
  You get it ;)

QA Checklist

In order to ensure a safe and quick review, please check that your PR follow those guidelines:

• I have put the vanilla component as devDependencies
• I have put the specs package as devDependencies
• I have added the components directly used in the twig file (with include or embed) as dependencies
• My component is listed in @ecl-twig/ec-components's dependencies
• My variables naming follow the guidelines (snake case for twig)
• I have provided tests
• I have provided documentation (for the "notes" tab)
• If my local yarn.lock contains changes, I have committed it
• I have given my PR the proper label (pr: review needed to indicate that I'm done and now waiting for a review ,pr: wip to indicate that I'm actively working on it ...)

[papegaill]

All good to me, can be merged 👍
Resolved conflicts with develop merge, and I think we have some general issues with drone.

[planctus]

Ok, cool, the issue with drone should be fixed ;)