micro-ROS public infrastructure transition

As part of an OSRA-led clarification of governance boundaries within the ROS ecosystem, the public infrastructure of micro-ROS is transitioning to the Vulcanexus ecosystem.

This change is limited to public infrastructure and hosting. The micro-ROS project itself, its goals, roadmap, APIs, and technical direction remain unchanged. micro-ROS continues to be fully aligned with ROS 2 and supports standard ROS 2 workflows.

The new canonical website for micro-ROS is:
https://micro.vulcanexus.org

During the transition period, micro.ros.org will display a notice page indicating the new location of the project and guiding users to update bookmarks and references.

We recommend updating any existing links, documentation, or automation to point to the new domain.

Further updates will be shared as the transition progresses.