`{path}.html` is no longer the HTML report output path

[daavoo]

https://github.com/iterative/dvc/pull/6431/files#r698317884

[daavoo]

From https://github.com/iterative/dvc/pull/6431/files#r700894470 :

I kind of like dvclive/tsv & dvclive/html.

Honestly, the word plots for referring to the HTML sounds kind of confusing to me because the .tsv files are also dvc plots in a sense.

Moving the outputs to subdirectories would require some changes in DVC core but it feels like a good direction. I might consider also moving the summary .json to dvclive/summary.json.

[daavoo]

Added a branch with those changes (tsv, html, summary.json) in dvc core:

https://github.com/iterative/dvc/compare/dvclive-output-subdirs

No strong preference on the alternatives (could be plots instead of tsv?) but I don't really like the current _dvc_logs, looks weird even in docs: https://github.com/iterative/dvc.org/pull/2783/files