Adds createable Improvised Explosives!

Making a new pull for my Improvised Explosives with revised code because I could not into git and messed up the previous pull request
Recipe is:
Igniter on Dr.Gibb can (Gibb, Explosive, Ha ha so fahnny joke)
Use the resulting assembly on a welding fuel tank to fill it up
Add wiring
Creates a 5 second countdown timed explosive with a (-1,0,2) explosion (Equal to a welderbomb)

Hopefully my code is a bit better this time
If you see a problem with my code, please let me know
Tested, didn't find any issues, and most people in the last pull had mostly positive or reserved comments