API: Add new Get Inbound User (#3644)

* Add GetInboundUser in proto

* Add get user logic for all existing inbounds

* Add inbounduser command

* Add option to get all users

* Fix shadowsocks2022 config

* Fix init users in shadowsocks2022

* Fix copy

* Add inbound user count command

This api costs much less than get inbound user, could be useful in some case

* Update from latest main

proxy/shadowsocks/server.go

@@ -63,6 +63,21 @@ func (s *Server) RemoveUser(ctx context.Context, e string) error {
 	return s.validator.Del(e)
 }
 
+// GetUser implements proxy.UserManager.GetUser().
+func (s *Server) GetUser(ctx context.Context, email string) *protocol.MemoryUser {
+	return s.validator.GetByEmail(email)
+}
+
+// GetUsers implements proxy.UserManager.GetUsers().
+func (s *Server) GetUsers(ctx context.Context) []*protocol.MemoryUser {
+	return s.validator.GetAll()
+}
+
+// GetUsersCount implements proxy.UserManager.GetUsersCount().
+func (s *Server) GetUsersCount(context.Context) int64 {
+	return s.validator.GetCount()
+}
+
 func (s *Server) Network() []net.Network {
 	list := s.config.Network
 	if len(list) == 0 {