fix packaging of dSYM archives to contain the .app.dSYM folder
specify the root folder and reuse it into dsym folder calculation
Sanity check for dSyms

I case we cannot find dSyms we check if they should be created according to

the xcode configuration.

In case they should be created but could not be found

we know we make a mistake. In this case we should throw an exception.
check if Xcode is configured properly to generate dSym