feat(scheming): added Dutch translation to all fields for the Scheming

[Markus92]

This PR adds Dutch translation to all scheming fields.

Hopefully will also translate the search facets when we run CKAN with Dutch locale.

Summary by Sourcery

Introduce Dutch translations for all fields in the scheming schema to support multilingual capabilities, potentially improving user experience for Dutch-speaking users.

New Features:

• Add Dutch translations to all fields in the scheming schema, enhancing multilingual support.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds Dutch translations to all fields in the Scheming schema for the GDI User Portal. The changes are implemented by modifying the JSON structure to include both English ('en') and Dutch ('nl') translations for various field labels, help texts, and other textual content throughout the schema.

File-Level Changes

Change	Details	Files
Added Dutch translations for all field labels and help texts	Converted single-language strings to objects with 'en' and 'nl' keys Translated all English text to Dutch for 'nl' entries Updated structure for fields with nested properties to include translations Added Dutch translations for dataset fields, resource fields, and their respective properties	ckanext/gdi_userportal/scheming/schemas/gdi_userportal.json
Updated JSON structure to support multilingual content	Modified simple string values to objects with language keys Adjusted nested field structures to accommodate translations Ensured consistency in the new multilingual format throughout the schema	ckanext/gdi_userportal/scheming/schemas/gdi_userportal.json

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sourcery-ai]

Hey @Markus92 - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 2 issues found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[Markus92]

Review comments are about things not currently supported by CKAN, AFAIK.