added support for dev containers

[trvon]

To isolate the potential conflicts of python libraries, I added support for running the tool in a dev container.

[RPG-fan]

Great idea! I'll look into merging this after I finish my current run, might be a couple more days before I can fully check it out.

[trvon]

No worries, I think I may need additional updates for mounting local projects directly in the src directory of the container.

[RPG-fan]

I tried to structure the repository to mimic the default starting structure, but the design allows for (or should) freeform placement. I've worked with docker in the past, but only as a user so I need to catch up on how dev containers work and what the general practices are. I'll try to keep this in mind when working on the next versions so we can fit this in where it makes sense.