major msg -> obj file transfer refactor

mostly done, some things are hacky or not done

solanaceae/tox_messages/obj_components.hpp

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <solanaceae/object_store/meta_components_file.hpp> // contains the alias
+
+#include <solanaceae/toxcore/tox_key.hpp>
+
+namespace ObjectStore::Components {
+
+	namespace Tox {
+
+		struct FileID {
+			// persistent ID
+			// sometimes called file_id or hash
+			ToxKey id;
+			// TODO: variable length
+		};
+
+		struct FileKind {
+			// TODO: use tox file kind
+			uint64_t kind {0};
+		};
+
+		// temporary replacement for Sending/Receiving
+		// TODO: something generic in os ?????
+		struct TagIncomming {};
+		struct TagOutgoing {};
+
+	} // Tox
+
+	namespace Ephemeral {
+
+		struct ToxTransferFriend {
+			uint32_t friend_number;
+			uint32_t transfer_number;
+		};
+
+	} // Ephemeral
+
+} // ObjectStore::Components
+
+#include "./obj_components_id.inl"
+