Add swiftlint:disable all to leading trivia

[ethanndickson]

This line is also present on files generated by swift-protobuf.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: ethanndickson / name: Ethan (a7dc8ab, b18ebe5)
• ✅ login: glbrntt / name: George Barnett (613d07f)

[ethanndickson]

For context, swiftlint doesn't have proper support for excluding files with a certain extension: realm/SwiftLint#2329, making this PR useful.

[glbrntt]

Thanks for this @ethanndickson -- and thanks for providing the context too.

Could you run ./dev/protos/generate.sh? That'll make re-generate the code checked in to this repo with your changes.

[ethanndickson]

Done!

[glbrntt]

Thank you!

[adarhef]

Hey, just wanted to comment that if I don't exclude pb files from analysis, SwiftLint warns about blanket disable commands:

Blanket Disable Command Violation: Use 'next', 'this' or 'previous' instead to disable the 'all' rule once, or re-enable it as soon as possible` (blanket_disable_command)

The blanket_disable_command rule is enabled by default in SwiftLint, and I personally prefer to keep it enabled.
I think we might want to swiftlint:enable all at the end of the file to get around this?

EDIT: I just noticed the swift-protobuf generator doesn't re-enable warnings at the end either...