Feature request: Warn if model's first layer is not on a plane

[probonopd]

If the user loads a file similar to this, then there should be a warning, saying that this will not print correctly and will result in "filament spaghetti". In this case, the rectangular area in the second picture will not have bed adhesion.

First layer:

Second layer:

[tibor-vavra]

You can turn on Analysis module in Settings->PrusaControl settings. Its check your scene every time you change it for basic mistakes. At this moment, it is sometimes slow, thats why its turn off at default.