Arch: Fix wall baseface generation for overlapping and self-intersecting traces

[Roy-043]

To fix the issue a new argument, per_segment, was introduced for the bind function in faces.py. Additionally the call to face.fix() was moved to that function.

Fixes #7370

Forum topics:
https://forum.freecadweb.org/viewtopic.php?f=23&t=67107&start=30
https://forum.freecadweb.org/viewtopic.php?f=23&t=71107

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[berndhahnebach]

for feature branch PR_7436. Pipeline 630414837 was triggered at 8aaa36a. All CI branches and pipelines.

[yorikvanhavre]

Amazing job!

[Roy-043]

@donovaly FYI: this bug fix can be backported.

[donovaly]

Thanks, backported.