Update file icon to be the robot framework emoji face thing

[KotlinIsland]

[lte2000]

this project is forked from mtrubs/intellibot. I hope keep the design from the originator.

[KotlinIsland]

Why? That project is long abandoned and I think the current robot logo would look a lot better

[lte2000]

[KotlinIsland]

@lte2000 Any change of mind here? I think preserving the old projects design is a fruitless endeavour.

Just delete all the old bad parts and start doing cool stuff.

[ejandzej]

+1 to change the icon, this yellow is very ugly and edgy