Draft: Add NavigationalMetaData object that could replace ##Params container

This MR is an exploration of the potential replacement of ##Params (and potentially other POOL containers) with NavigationalMetaData object.

For now, I've done the following (see the commits):

• added NavigationalMetaData with a map to store the parameters (FID and PFN)
• added NavigationalMetaDataTool which at MetaDataStop incident writes FID and PFN of the output file
• enabled reading of FID and PFN from NavigationalMetaData when opening DbDatabase in pool::READ mode (this relies on ##Links)