feat: updated loaders

[florian-lefebvre]

Todo

• code
  • new API
  • backward compat
  • add todos comments to remove things in v7
• tests
• docs
• changeset
• pr desc

Changes

• Closes Deprecate loader types generation from schema #14381
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Testing

Docs

[changeset-bot]

⚠️ No Changeset found

Latest commit: c227582

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