sync (v1-v3) (thx azzu0,tamilpp25,akioukun)

* Thank you for adding too
`option java_package = "emu.grasscutter.net.proto";`
this makes my life easier.
* including the gc enum name, this is really, really helpful wow

proto/GetAllMailNotify.proto

@@ -15,11 +15,9 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 syntax = "proto3";
-
 option java_package = "emu.grasscutter.net.proto";
-
-
 // CmdId: 1434
+// Obf: CNDIIOHHDIO
 message GetAllMailNotify {
 	bool is_collected = 7;
 }