[bin][test] Introduce new folder structure

bin/fuzzycomparevtu.py

bin/runtest.py

bin/testing/fuzzycomparevtu.py

bin/testing/runtest.py

test/common/generalproblem/CMakeLists.txt

test/freeflow/navierstokes/CMakeLists.txt

test/freeflow/stokes/CMakeLists.txt

test/freeflow/stokes2c/CMakeLists.txt

test/freeflow/stokes2cni/CMakeLists.txt

test/freeflow/zeroeq/CMakeLists.txt

test/freeflow/zeroeq2c/CMakeLists.txt

test/freeflow/zeroeq2cni/CMakeLists.txt

test/geomechanics/el1p2c/CMakeLists.txt

test/geomechanics/el2p/CMakeLists.txt

test/geomechanics/elastic/CMakeLists.txt

test/io/gridcreator/CMakeLists.txt

test/material/fluidmatrixinteractions/2p/CMakeLists.txt

test/material/fluidmatrixinteractions/CMakeLists.txt

test/multidomain/2cnistokes2p2cni/CMakeLists.txt

test/multidomain/2cnizeroeq2p2cni/CMakeLists.txt