Disable redundant_optional_initialization SwiftLint rule

[insidegui]

There are quite a few property wrappers that fail to build unless the property is explicitly initialized with nil, for example:

// Fails to build
@Invalidating(.layout)
var image: NSImage?

// Builds successfully
@Invalidating(.layout)
var image: NSImage? = nil

This can be solved locally with a comment, but it's annoying and ugly:

@Invalidating(.layout)
// swiftlint:disable:next redundant_optional_initialization
var image: NSImage? = nil

I think the better approach would be to disable the rule globally.