chore: put max upload size in field config

[jahow]

Description

This PR introduces a MAX_UPLOAD_SIZE_MB parameter in the field config. For now it is fixed to 10 MB because we cannot read it from the GeoNetwork API.

Architectural changes

Screenshots

Quality Assurance Checklist

• Commit history is devoid of any merge commits and readable to facilitate reviews
• If new logic ⚙️ is introduced: unit tests were added
• If new user stories 🤏 are introduced: E2E tests were added
• If new UI components 🕹️ are introduced: corresponding stories in Storybook were created
• If breaking changes 🪚 are introduced: add the breaking change label
• If bugs 🐞 are fixed: add the backport <release branch> label
• The documentation website 📚 has received the love it deserves

[github-actions]

Affected libs: feature-editor,
Affected apps: metadata-editor, datafeeder, demo,

• 🚀 Build and deploy storybook and demo on GitHub Pages
• 📦 Build and push affected docker images

[github-actions]

📷 Screenshots are here!

[coveralls]

coverage: 81.781% (-1.2%) from 82.999%
when pulling f60b198 on ME-max-upload-size
into aa68983 on main.