Update dataset ingestion docs, remove workflows API

[smohiudd]

Description

Update veda docs to reflect new ingestion tools:

• role based SM2A
• veda ingest ui
• veda-data (create PR manually)

Review existing veda docs for outdated or incomplete content. Update sections as necessary including:

• https://docs.openveda.cloud/user-guide/content-curation/dataset-ingestion/
• https://docs.openveda.cloud/user-guide/content-curation/dataset-ingestion/catalog-ingestion.html
• https://docs.openveda.cloud/user-guide/content-curation/dataset-ingestion/example-template/example-geoglam-ingest.html
• https://docs.openveda.cloud/user-guide/data-services/data-ingestion.html
• https://docs.openveda.cloud/user-guide/data-services/apis/

Acceptance Criteria

• veda docs updated to reflect updated ingestion workflow/tools