DOCS-#6987: Rework range-partitioning docs

[dchigarev]

What do these changes do?

This PR:

1. Moves range-partitioning documentation section from flow/experimental/... to usage_guide/optimization_notes
2. The introduction of what range-partitioning is, was placed on the optimization notes page
3. The description of each range-partitioning operation was separated and placed on a separate page (optimization notes hold a link to that page)
4. Described all the methods that support range-partitioning
5. Added performance measurements for some of the operations (perf measurements and micro-benchmark scripts were copied from the respective PRs without any changes)

Links to the rendered pages:

• Intro: https://modin--7169.org.readthedocs.build/en/7169/usage_guide/optimization_notes/index.html#range-partitioning-in-modin
• Operations list: https://modin--7169.org.readthedocs.build/en/7169/usage_guide/optimization_notes/range_partitioning_ops.html

The check-list:

• 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 Rework documentation regarding range-partitioning implementations #6987
• tests added and passing
• module layout described at docs/development/architecture.rst is up-to-date

[YarShev]

Maybe we should remove this page at all as we do not reference it anywhere?

[dchigarev]

we still may have a reference to this page somewhere outside our docs (messages, gh issues/comments, blog posts, in-code comments). So I would prefer an automatic redirect to a new page instead of 404

[YarShev]

same