surface file reader for ftr and off files

Summary

I've come across two issues with surface files:

• surfaceTransformPoints does not support ftr file.
• off files are read without reading the region (patch) information. While it seems to be present in the file.

Both these issues are non-essential for me, since I never use these file types. I've created this bug-report to let you know the inconsistency in the use of these files. Therefore a result of this report could be that it is not worth the time to look into this.

Steps to reproduce

I found the issue in creating a tool, described in: In #2239 (comment 54832) The test.sh file in this post, illustrates both issues. @mark already commented on the issues in this post: #2239 (comment 54835)

Relevant logs and/or images

Environment information

OpenFOAM version : v2106