Add fuzz inputs

[maflcko]

C.f. last one: #227

mv fuzz_corpora fuzz_inputs_moved
../b-c/bld-cmake/test/fuzz/test_runner.py -l DEBUG --par $( nproc ) --m_dir ./fuzz_inputs_moved/  --m_dir ./results_from_working_farm --m_dir ../etc/... ./fuzz_corpora
git restore -- ./fuzz_corpora
git add ./fuzz_corpora
git commit -m "Add fuzz inputs"

[maflcko]

main: https://drahtbot.space/host_reports/DrahtBot/reports/coverage_fuzz/monotree/6ca6f3b37b992591/1b9ff439e9efc5e2/fuzz.coverage/index.html
this pull: https://drahtbot.space/host_reports/DrahtBot/reports/coverage_fuzz/monotree/6ca6f3b37b992591/ddfba9d2c62903de/fuzz.coverage/index.html