FEAT-#6890: Modin implementation of DataFrame API standard

[anmyachev]

What do these changes do?

• first commit message and PR title follow format outlined here

  NOTE: If you edit the PR title to match this format, you need to add another commit (even if it's empty) or amend your last commit for the CI job that checks the PR title to pick up the new PR title.

• passes flake8 modin/ asv_bench/benchmarks scripts/doc_checker.py
• passes black --check modin/ asv_bench/benchmarks scripts/doc_checker.py
• signed commit with git commit -s
• Resolves Add consortium DataFrame standard entrypoint #6890
• tests added and passing
• module layout described at docs/development/architecture.rst is up-to-date

[YarShev]

When do we expect a new release of dataframe-api-compat containing support for Modin?

[anmyachev]

I expect that I will have time to make a new release of this package before the new release of Modin. As a last resort, we will limit it to some working commit.