🎉 convert explorers from TSV to YML

[lucasrodes]

ref: #4072

• Remove etl.explorer_helpers (it was not in use)
• Move etl.explorer to etl.collections.explorer_tsv, since it is an interface for TSV-based explorers. etl.collections.explorers is a more general interact, which also deals with YAML-based explorers.
• Rename Explorer (formerly in etl.explorer) as ExplorerTSV (now in etl.collections.explorer_tsv).

Future, related:

• Add support for display for indicators
  • old TSV → new dataclass
  • new dataclass → TSV (only indicator-based)
• Test tools in Population explorer: Working on this in https://github.com/owid/etl/pull/4095/files
• Put simple functions in place to do migration
• Add check to just allow migration when possible:
  • CSV-based with ETL-generated
  • Indicator-based

[owidbot]

Quick links (staging server):

Site Dev	Site Preview	Admin	Wizard	Docs

Login: ssh owid@staging-site-feature-explorers-tsv-yml

chart-diff: ✅

No charts for review.

data-diff: ✅ No differences found

Legend: +New  ~Modified  -Removed  =Identical  Details
Hint: Run this locally with etl diff REMOTE data/ --include yourdataset --verbose --snippet

Automatically updated datasets matching weekly_wildfires|excess_mortality|covid|fluid|flunet|country_profile|garden/ihme_gbd/2019/gbd_risk are not included

Edited: 2025-03-11 17:21:05 UTC
Execution time: 20.74 seconds