Correctly handle `json` fields

[pawcoding]

Issues

• Json fields would return empty object
  • Closes #7

Changes

• Use unknown instead of object for json fields, since it otherwise only returns empty objects
• Add jsonSchemas option to add custom schema for json fields by users

[elbotho]

Maybe you can try it out and let me know if it works for you. My initial tests seem promising so far.

Obviously nicer this way, thank you! Works great for me. With and without jsonSchema.

PS: One thing I noticed: It seems I get no console output / warning if a validation fails (but this might be unrelated to the json topic)

[pawcoding]

Great, then I will merge this to get object working 🚀

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Normally the dev server should crash with error messages like this if the schema is wrong:
links.links has no external field	version is an object and not a string

Can you create a new issue for the missing validation with:

• Loader configuration for the collection
• PocketBase schema of the colection
• Example entries of the collection

Then I can try to reproduce the problem locally and maybe find the bug.