Prepare QS to include Swift

[n8henrie]

• macos-12 runner is deprecated
• Remove complex macros, which break compilation with Swift
• Remove complex macros, which are incompatible with Swift
• Add missing imports
• Add blank swift file
• Use Swift 6.0
• Fix minimum version message and https URL
• Remove outdated version target
• Add bare minimum to run swift from objc
• Swift 6.0 not avail in GHA runners at this point (xcode 15), stick to swift 5 for now
• Remove dummy Swift code

[n8henrie]

Probably should squash when / if these are merged. @pjrobertson looking forward to your review!

[skurfer]

Built and ran it locally to be sure, but looks good!

Also, you can just create branches in this repo. No need to have a fork once you have access here.

[pjrobertson]

Another enumerateKeysAndObjectsUsingBlock

[n8henrie]

EDIT: moved from above

How does this look?

[[QSReg tableNamed:kQSPlugInInfoHandlers] enumerateKeysAndObjectsUsingBlock:^(NSString *key, id handlerClass, BOOL * _Nonnull stop) {
	id value = [bundle dictionaryForFileOrPlistKey:key];
	if (!value) {
		return;
	}
	//NSLog(@"----> Registering %@ for %@", key, [self name]);
	id handler = [QSReg getClassInstance:handlerClass];
	if ([handler respondsToSelector:@selector(handleInfo:ofType:fromBundle:)])
		[handler handleInfo:value ofType:key fromBundle:[self bundle]];
}];

[n8henrie]

@pjrobertson I think I got those blocks rewritten -- I like that much better, thanks for pointing out that method (initial draft was just a naive translation of the macro).

Unfortunately running the tests immediately crashes XCode right now (wtf xcode), so hopefully things pass in CI. QS still seems to run with these changes, so hopefully they're right.

[pjrobertson]

Looks spot on! I've merged :)