Push latest docs down into a "latest" folder #6778
Description
Currently, the master-branch documents are generated daily and appear at http://docs.zephyrproject.org. Tagged release branch documentation appear at http://docs.zephyrproject.org/1.11.0/ (for example). Proposal is to move the master branch docs into http://docs.zephyrproject.org/latest to solve a problem with the CI systems not being able to properly sync the generated content folder because the tagged version docs are contained within the directory structure of the latest docs not as a sibling folder of the latest docs.