Create spade project

Dependencies

• [2] U3M7Y7QX

Change contents

• file addition: swim.toml (----------)
  [2.1]
  + name = "barrel"
• file addition: src (d--r------)
  [2.1]
• file addition: main.spade (----------)
  [0.67]
  + entity main() -> int<8> {

  + 0

  + }
• file addition: .ignore (----------)
  [2.1]
  + build/