cpp: check that mesh provided is consistent with problem selected

[fnrizzi]

Since we have specific problems, we need to add inside the impl classes checks such that when the problems are constucted , the mesh object passed in satisfies the physical bounds for that specific problem

e.g., for the Euler2d:

explicit EigenApp2d(const mesh_t & meshObj, int icId = 1)  
: meshObj_(meshObj), icId_(icId)  {    
 if (probid == 1){ 
   // throw if domain not compatible with 2d Sedov, else throw
 }
else if (probid==2){
   // throw if domain not compatible with 2d Riemann 
}
 ///
}