Moved all sources files and ressources to src/ folder

src/.qmake.stash

src/InteractionFields.pro

src/InteractionFields.pro.user

src/InteractionFields.vcxproj

src/InteractionFields.vcxproj.filters

src/InteractionFields.vcxproj.user

src/images/background1.png

src/images/background2.png

src/images/background3.png

src/images/background4.png

src/images/blue-circle.png

src/images/blue-circles.png

src/images/bold.png

src/images/bringtofront.png

src/images/brush.png

src/images/brushcolor.png

src/images/brushcolorbis.png

src/images/clear.png

src/images/curveVector.png

src/images/delete.png