File_Adapter: refactoring-refactor to match ReplaceInMemory refactoring

[alelom]

Description

As explained in BHoM/BHoM_Adapter#106

Since File_Adapter does not set AdapterConfig.ProcessInMemory, that defaults to true.
This means that the call to Create will always have replaceAll set to true.

Therefore the following calls will have replaceAll always set to true:
https://github.com/BHoM/BHoM_Adapter/blob/49d63e82db3eefa5eecb960e1bd84ab410fc2c51/File_Adapter/CRUD/Create.cs#L40-L46

So these lines never get called
https://github.com/BHoM/BHoM_Adapter/blob/49d63e82db3eefa5eecb960e1bd84ab410fc2c51/File_Adapter/CRUD/Create.cs#L80-L81
As well as this is never called with Append:
https://github.com/BHoM/BHoM_Adapter/blob/49d63e82db3eefa5eecb960e1bd84ab410fc2c51/File_Adapter/CRUD/Create.cs#L57

Proposed change

If anything, the option for the Create method to override should be specifiable dynamically, rather than hard-coded.
This might be solved by making the so called config parameter available to all CRUD methods.

I would remove replaceAll as a parameter of the Create() and use another parameter like
config["CreateOverride"] = true.