Resolves #343 GUI and Frame Refactor

Major rewrite of the GUI into a module and view form, also using a new Feed class. The frame and frameset data structures have also been rewritten to support memory pooling and response frames.

components/streams/test/feed_unit.cpp

@@ -22,7 +22,7 @@ TEST_CASE("ftl::streams::Feed can obtain a frameset", "[]") {
 	auto* net = ftl::create<ftl::net::Universe>(cfg1);
 	auto* feed = ftl::create<ftl::stream::Feed>(cfg2, net);
 
-	feed->add("file.ftl");
+	feed->add("./file.ftl");
 	feed->add("file:///absolutefile.ftl");
 	//feed->add("file://relativefile.ftl");  // This is not allowed
 	feed->add("file:/./relativefile.ftl");