- add: logout grpc function

- add: logout packet handler
- add: connection state and service for storing connection data
- add: session service calls to auth-service
- fix: compile error on database service due to moved redis cache

proto/auth.proto

@@ -4,7 +4,9 @@ package auth;
 
 service AuthService {
     rpc Login(LoginRequest) returns (LoginResponse);
+    rpc Logout(LogoutRequest) returns (Empty);
     rpc ValidateToken(ValidateTokenRequest) returns (ValidateTokenResponse);
+    rpc ValidateSession(ValidateSessionRequest) returns (ValidateSessionResponse);
     rpc Register (RegisterRequest) returns (RegisterResponse);
     rpc RequestPasswordReset (PasswordResetRequest) returns (PasswordResetResponse);
     rpc ResetPassword (ResetPasswordRequest) returns (ResetPasswordResponse);
@@ -13,11 +15,17 @@ service AuthService {
 message LoginRequest {
     string username = 1;
     string password = 2;
+    string ip_address = 3;
 }
 
 message LoginResponse {
     string token = 1;
     string user_id = 2;
+    string session_id = 3;
+}
+
+message LogoutRequest {
+    string session_id = 1;
 }
 
 message ValidateTokenRequest {
@@ -29,6 +37,14 @@ message ValidateTokenResponse {
     string user_id = 2;
 }
 
+message ValidateSessionRequest {
+    string session_id = 1;
+}
+
+message ValidateSessionResponse {
+    bool valid = 1;
+}
+
 message RegisterRequest {
     string username = 1;
     string email = 2;
@@ -56,3 +72,5 @@ message ResetPasswordRequest {
 message ResetPasswordResponse {
     string message = 1;
 }
+
+message Empty {}