Sunset legacy `ipfs-ds-convert` tool

[lidel]

This project has not being maintained, was created in go-ipfs times, only supports ancient badgerv1 which we want to sunset, and makes little sense to exist now that we have more implementations than Kubo.

As discussed in ipfs/kubo#10347 (comment) we'd rather have converter built-into Kubo, than have this confusingly named tool.

TODO

• update readme informing that project is no longer relevant
• hide it from dist.ipfs.tech by adding it to ignored lists here and here
  • chore: hide ipfs-ds-convert ipfs/distributions#1101
• remove from docs website https://docs.ipfs.tech/how-to/default-profile/#converting-profiles
  • chore: remove content related to legacy ipfs-ds-convert tool ipfs/ipfs-docs#1935
• close this and other issues
• move to https://github.com/ipfs-inactive/
• archive this repository