[doxygen] exclude tests from doxygen to reduce doxygen size and runtime (!2141) · Merge requests · dumux-repositories / dumux

What this MR does / why does DuMux need it: Excludes tests from doxygen to reduce doxygen size and compile time.

Before: Size: 302M
Time: 8m29.095s

After: Size: 181M
Time: 3m58.628s

Which issue this MR fixes: fixes #887 (closed)

[doxygen] exclude tests from doxygen to reduce doxygen size and runtime