CI MSYS2: added the genromfs tool for creating romfs file systems

[simbit18]

Summary

Add:

• the genromfs tool for creating romfs file systems

https://github.com/chexum/genromfs

Impact

Impact on user: NO

Impact on build: NO

Impact on hardware: NO

Impact on documentation: NO

Impact on security: NO

Impact on compatibility: NO

Testing

https://github.com/simbit18/nuttx_test_pr/actions/runs/18650202043/job/53166252356#logs

Run genromfs -h
genromfs 0.5.2
Usage: genromfs [OPTIONS] -f IMAGE
Create a romfs filesystem image from a directory

  -f IMAGE               Output the image into this file
  -d DIRECTORY           Use this directory as source
  -v                     (Too) verbose operation
  -V VOLUME              Use the specified volume name
  -a ALIGN               Align regular file data to ALIGN bytes
  -A ALIGN,PATTERN       Align all objects matching pattern to at least ALIGN bytes
  -x PATTERN             Exclude all objects matching pattern
  -h                     Show this help

[cederom]

Thank you @simbit18 :-)