(WIP) CONFIG: add meson build files

applications/meson.build

applications/solvers/DNS/dnsFoam/meson.build

applications/solvers/DNS/meson.build

applications/solvers/acoustic/acousticFoam/meson.build

applications/solvers/acoustic/meson.build

applications/solvers/basic/laplacianFoam/meson.build

...vers/basic/laplacianFoam/overLaplacianDyMFoam/meson.build

applications/solvers/basic/meson.build

applications/solvers/basic/potentialFoam/meson.build

...solvers/basic/potentialFoam/overPotentialFoam/meson.build

applications/solvers/basic/scalarTransportFoam/meson.build

applications/solvers/combustion/PDRFoam/meson.build

applications/solvers/combustion/XiFoam/XiDyMFoam/meson.build

...ations/solvers/combustion/XiFoam/XiEngineFoam/meson.build

applications/solvers/combustion/XiFoam/meson.build

applications/solvers/combustion/chemFoam/meson.build

applications/solvers/combustion/coldEngineFoam/meson.build

applications/solvers/combustion/fireFoam/meson.build

applications/solvers/combustion/meson.build

applications/solvers/combustion/reactingFoam/meson.build