[MERGED PR] Reworks chest organ surgery

[Bartimeus]

Crossposting from the github since not everyone checks there:

Upon opening up a patient, you are now prompted with four "regions". To open up those regions, you must use different tools. Once a region is opened up, you may freely examine and take out the organs in that specific region. Suturing up a patient closes that region, which means that to get access to the patient's organs again you have to re-open that specific region.

Here is an example of the current way things work (not fully finished and icons are placeholders):