ENH: Lagrangian - added new PatchInteractionFields cloud function object

Creates volume fields whose boundaries are used to store patch interaction statistics.

Current field output per patch face:

• <cloud><model>:count - cumulative particle hits
• <cloud><model>:mass - cumuluative mass of hitting particles

Fields can be reset according to:

• none: fields are not reset
• timeStep: reset at each time step
• writeTime: reset at each write time

Usage

patchInteractionFields1
{
    type            patchInteractionFields;
    resetMode       writeTime;
}

See test case $FOAM_TUTORIALS/lagrangian/reactingParcelFoam/filter