Rename web-worker → allow-web-workers for clarity.

The former was unclear about how the dependency would relate to web workers. Would it only be available to workers? Would it automatically spin up a worker?

`allow-web-workers` isn't 100% perfect, but it implies the correct answers to the questions above (no and no) and isn't too long.

src/lime/tools/Dependency.hx

@@ -5,7 +5,7 @@ class Dependency
 	// TODO: Is "forceLoad" the best name? Implement "whole-archive" on GCC
 	public var embed:Bool;
 	public var forceLoad:Bool;
-	public var webWorker:Bool;
+	public var allowWebWorkers:Bool;
 	public var name:String;
 	public var path:String;
 

src/lime/tools/ProjectXMLParser.hx

@@ -1662,9 +1662,9 @@ class ProjectXMLParser extends HXProject
 						dependency.forceLoad = parseBool(element.att.resolve("force-load"));
 					}
 
-					if (element.has.resolve("web-worker"))
+					if (element.has.resolve("allow-web-workers"))
 					{
-						dependency.webWorker = parseBool(element.att.resolve("web-worker"));
+						dependency.allowWebWorkers = parseBool(element.att.resolve("allow-web-workers"));
 					}
 
 					var i = dependencies.length;