Prototype: Altimetry-derived models

[Daetha]

This PR presents the DB structure and front-end (with HTML and JS logic). Many variables needed to describe this kinds of models are already developped elsewhere in ELMO-GEM, so they can be reused. This PR also affects STC, file formats, data sources, temporal model properties by orchestrating their visibility with Javascript.

The PR is aimed at showcasing the prototype and getting detailed feedback, so the focus is on the front-end. Save script and XML generation as well as tests will be implemented for the final version, based on the feedback we gather.

Solves #1126 #1125 #1016

Changes

Added FG Altimetry-dervived models
Toggle the STC based on it: the altimetry-derived models can have regional Spacial coverage
Added responible tables into the database

What I haven't done

tests
save scripts
xml generation
language files (not planned for ELMO GEM)

Notes for Reviewer

This is not intended for main, so the PR will stay here as a draft till ~18th of March

Checklist

• My code follows the style guide.
• I have self-reviewed my code.
• I added comments for hard-to-understand code.
• If applicable, PHP code is documented using PHPDoc.
• If applicable, JavaScript code is documented using JSDoc.
• If needed, the ELMO Guide has been updated.
• If needed, the README has been updated.
• If needed, the API documentation has been updated.
• If a new feature was added or a bug fixed, the changelog has been updated.
• My changes do not create new warnings in the test browser console.
• I have added unit tests that cover my code.
• All new and existing unit tests pass locally.
• All new and existing automated unit tests pass in the pull request.
• If applicable, Playwright tests have been updated and new tests added.
• All new and existing automated Playwright tests pass in the pull request.
• I ensured the changes meet accessibility guidelines.

Known Issues

[What lower priority problems remain?]

[Daetha]

Aims at closing #1016