Hidread: add enumeration and opening of a specified port

[dehanj]

Description

Adds the features to:

• Enumerate all connected HID devices
• Scan after a specific VID/PID device, and optionally continue to scan and open the port if it is found.

Type of change

Please tick any that are relevant to this PR and remove any that aren't.

• Feature (non breaking change which adds functionality)

Submission checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my changes
• My changes are well written and CI is passing
• I have squashed my work to relevant commits and rebased on main for linear history
• I have added a "Co-authored-by: x" if several people contributed, either pair programming or by squashing commits from different authors.
• I have updated the documentation where relevant (readme, dev.tillitis.se etc.)
• QEMU is updated to reflect changes

[dehanj]

One thing I realize it does not handle, is if there is multiple available HID ports with a specific vid and pid. Now it will use the last it finds.