CI: FUSE related fixes/improvements (master)

[ThomasWaldmann]

fixes #9182

• install OS fuse support packages as indicated by the tox env. on the macOS runners, we do not have any fuse support. on the linux runners, we may have fuse2 or fuse3. on FreeBSD, we have fuse2.
• install fuse python library for binary build
• first build/upload binaries, then run tests (including binary tests). early uploading makes inspection of a malfunctioning binary possible.
• for now, use llfuse, as there is an issue with pyinstaller and pyfuse3.

Also:

• remove || true - this just hides errors, not what we want.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.72%. Comparing base (2af8de5) to head (ac73be4).
⚠️ Report is 7 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9224   +/-   ##
=======================================
  Coverage   78.72%   78.72%           
=======================================
  Files          85       85           
  Lines       14188    14188           
  Branches     2102     2102           
=======================================
+ Hits        11169    11170    +1     
  Misses       2347     2347           
+ Partials      672      671    -1     

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