More saves, launcher tweaks

Added config at char select screen
Transmog saving and loading (unlocks are not yet tackled and it is global rn)
Sigil saving (can break, initial pass of save)
Null compression and decompression functions.
First pass of the diff save function.
Disabled stamp cards

network/mhfpacket/msg_mhf_add_achievement.go

@@ -6,7 +6,9 @@ import (
 )
 
 // MsgMhfAddAchievement represents the MSG_MHF_ADD_ACHIEVEMENT
-type MsgMhfAddAchievement struct{}
+type MsgMhfAddAchievement struct{
+	Unk0 []byte
+}
 
 // Opcode returns the ID associated with this packet type.
 func (m *MsgMhfAddAchievement) Opcode() network.PacketID {
@@ -15,10 +17,12 @@ func (m *MsgMhfAddAchievement) Opcode() network.PacketID {
 
 // Parse parses the packet from binary
 func (m *MsgMhfAddAchievement) Parse(bf *byteframe.ByteFrame) error {
-	panic("Not implemented")
+	m.Unk0 = bf.ReadBytes(5)
+	// doesn't expect a response
+	return nil
 }
 
 // Build builds a binary packet from the current data.
 func (m *MsgMhfAddAchievement) Build(bf *byteframe.ByteFrame) error {
 	panic("Not implemented")
-}
+}