- 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

Cargo.toml

@@ -1,10 +1,13 @@
 [workspace]
 members = [
+    "api-service",
     "auth-service",
     "character-service",
     "database-service",
     "packet-service",
+    "session-service",
     "world-service",
-    "utils", "launcher", "api-service",
+    "utils",
+    "launcher"
 ]
 resolver = "2"