Remove dependency to MongoDB

[adecler]

Issues addressed by this PR

Closes BHoM/BHoM_Engine#2948

Additional comments

This repo didn't actually need Mongo packages. I had to make quite a few changes just to get the code to compile. While there are still some compiling alerts that needs resolving, I kept the changes to a minimum to stay within the scope of the issue while having a code that compiles.

[adecler]

@BHoMBot check project-compliance

[bhombot-ci]

@adecler to confirm, the following actions are now queued:

• check project-compliance

There are 22 requests in the queue ahead of you.

[alelom]

Thanks @adecler . This toolkit is actually being reworked by our external collaborator @EnricoAntolini from Karamba -- reason why many things needed to be changed just to compile is that the main was just an initial quick draft, and the work is now being done on a separate branch. If you agree, I can remember the changes you've done here and work with @EnricoAntolini in order to replicate them on his branch before we merge it -- I'd say it's a safer option to avoid conflicts.

[adecler]

Thanks @alelom , as long as this repo is not part of any installer, I am happy for it to be dealt with separately.
Just important notice for any one compiling this repo that there will be quite a few serialisations issues (including loading BHoM components as they use serialisation) if different toolkits use different versions of Mongo.