[Infrastructure] Create IFileSystemService interface & local service

[gclodge]

Need to implement a simple IFileSystemService abstraction layer that consuming applications would use to do the following:

• Read text / bytes from disk (async)
• Write text / bytes to disk (async)
• Verify if a file exists or not
• Verify if a folder exists or not

This would enable us to seamlessly handle both local & remote assets when attempting to perform CRUD operations via the Console and is also just a good practice in general.