Xtask/latest redirect

[bjoernQ]

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Submission Checklist 📝

• I have updated existing examples or added new ones (if applicable).
• I have used cargo xtask fmt-packages command to ensure that all changed code is formatted correctly.
• My changes were added to the CHANGELOG.md in the proper section.
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Pull Request Details 📖

Description

Based on #3228

This makes it possible to get documentation via URLs like .../esp-hal/latest/ to the latest created documentation version.
(apparently we have a redirect from e.g. https://docs.espressif.com/projects/rust/xtensa-lx-rt/ to https://docs.espressif.com/projects/rust/xtensa-lx-rt/latest/ )

Should resolve #3198

It also fixes the screwed-up naming of xtensa-lx-rt-proc-macros (which was causing problem generating the documentation)

Testing

cargo xtask build-documentation --chips=esp32c6 --chips=esp32c3
cargo xdoc build-documentation-index --serve

Try the above mentioned url - e.g. http://127.0.0.1:8000/esp-hal/latest/ or http://127.0.0.1:8000/esp-println/latest/

[SergioGasquez]

I guess before merging this we should update the documentation field in the Cargo.tomls to point tat the crate documentation instead of the landing page.

[bjoernQ]

Marking this as RFR - I'm a bit afraid we (at least I) don't have a real way to test this end-to-end and maybe I don't completely understand the doc-generation process in depth

[SergioGasquez]

LGTM! Thanks