symbol server abstraction layer; http layer; fix to 'prefer_disasm' rule when no disassembly tabs are open; small fixes / cleanup

src/http/http_stub.h

@@ -0,0 +1,7 @@
+// Copyright (c) Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef HTTP_STUB_H
+#define HTTP_STUB_H
+
+#endif // HTTP_STUB_H