Add wrapSingleLineBodies

[mannylopez]

Summary

AddwrapSingleLineBodies rule to

Wrap single-line function, init, subscript, and computed property bodies onto multiple lines.

// WRONG
func foo() { print("bar") }

init() { self.value = 0 }

subscript(index: Int) -> Int { array[index] }

var bar: String { "bar" }

// RIGHT
func foo() {
  print("bar")
}

init() {
  self.value = 0
}

subscript(index: Int) -> Int {
  array[index]
}

var bar: String {
  "bar"
}

Exception: This rule does not affect protocol definitions.

// RIGHT
protocol SpaceshipEngine {
  func engage() -> Bool
  var fuelLevel: Double { get }
}

Reasoning

[calda]

Since we try to avoid foo / bar in the style guide document, what do you think about updating this to the space theme? Claude should be able to think of a good example

[calda]

Maybe we put the var example first since var and func are the most common examples

[calda]

Wording like this might be more "style advice" oriented as opposed to imperative "code formatter" oriented.

Suggested change

	- <a id='wrap-single-line-declaration-bodies'></a>(<a href='#wrap-single-line-declaration-bodies'>link</a>) **Wrap single-line function, init, subscript, and computed property bodies onto multiple lines.**
	- <a id='wrap-single-line-declaration-bodies'></a>(<a href='#wrap-single-line-declaration-bodies'>link</a>) **Always wrap function and property bodies onto multiple lines.**

[calda]

Can we put the new rule after the "long function declarations" rule?