Add comprehensive documentation and unit tests

Documentation:
- Add detailed README files for all services (auth, character, database, launcher, packet, utils, world)
- Create API documentation for the database service with detailed endpoint specifications
- Document database schema and relationships
- Add service architecture overviews and configuration instructions

Unit Tests:
- Implement comprehensive test suite for database repositories (user, character, session)
- Add gRPC service tests for database interactions
- Create tests for packet service components (bufferpool, connection, packets)
- Add utility service tests (health check, logging, load balancer, redis cache, service discovery)
- Implement auth service user tests
- Add character service tests

Code Structure:
- Reorganize test files into a more consistent structure
- Create a dedicated tests crate for integration testing
- Add test helpers and mock implementations for easier testing

character-service/src/character_db_client.rs

@@ -1,9 +1,8 @@
-use crate::database::character_db_service_client::CharacterDbServiceClient;
 use crate::database::{
-    Character, CharacterListRequest, CharacterListResponse, CharacterRequest,
-    CreateCharacterRequest, CreateCharacterResponse, DeleteCharacterRequest,
-    DeleteCharacterResponse,
+    character_db_service_client::CharacterDbServiceClient, Character, CharacterListRequest, CharacterListResponse,
+    CharacterRequest, CreateCharacterRequest, CreateCharacterResponse, DeleteCharacterRequest, DeleteCharacterResponse,
 };
+
 use serde::{Deserialize, Serialize};
 use tonic::transport::Channel;
 

character-service/src/character_service.rs

@@ -1,9 +1,8 @@
 use crate::character_db_client::CharacterDbClient;
 use crate::character_service::character::character_service_server::CharacterService;
 use crate::character_service::character::{
-    CreateCharacterRequest, CreateCharacterResponse, DeleteCharacterRequest,
-    DeleteCharacterResponse, GetCharacterListRequest, GetCharacterListResponse,
-    GetCharacterRequest, GetCharacterResponse,
+    CreateCharacterRequest, CreateCharacterResponse, DeleteCharacterRequest, DeleteCharacterResponse,
+    GetCharacterListRequest, GetCharacterListResponse, GetCharacterRequest, GetCharacterResponse,
 };
 use crate::character_service::character_common::{Character, CharacterFull};
 use std::sync::Arc;
@@ -69,14 +68,7 @@ impl CharacterService for MyCharacterService {
             .character_db_client
             .as_ref()
             .clone()
-            .create_character(
-                &req.user_id,
-                &req.name,
-                req.race,
-                req.face,
-                req.hair,
-                req.stone,
-            )
+            .create_character(&req.user_id, &req.name, req.race, req.face, req.hair, req.stone)
             .await
             .map_err(|_| Status::aborted("Unable to create character"))?;
 

character-service/src/database.rs

@@ -0,0 +1,5 @@
+// Include the generated code
+tonic::include_proto!("character_db_api");
+
+// Re-export the types we need
+pub use character_db_service_client::CharacterDbServiceClient;

character-service/src/lib.rs

@@ -0,0 +1,3 @@
+pub mod character_db_client;
+pub mod character_service;
+pub mod database;

character-service/src/main.rs

@@ -14,7 +14,7 @@ use std::sync::Arc;
 use tracing::Level;
 use tracing_subscriber::EnvFilter;
 use utils::logging;
-use utils::service_discovery::{get_kube_service_endpoints_by_dns};
+use utils::service_discovery::get_kube_service_endpoints_by_dns;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -25,17 +25,22 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Set the gRPC server address
     let addr = env::var("LISTEN_ADDR").unwrap_or_else(|_| "0.0.0.0".to_string());
     let port = env::var("SERVICE_PORT").unwrap_or_else(|_| "50053".to_string());
-    let db_url = format!("http://{}",get_kube_service_endpoints_by_dns("database-service","tcp","database-service").await?.get(0).unwrap());
-
+    let db_url = format!(
+        "http://{}",
+        get_kube_service_endpoints_by_dns("database-service", "tcp", "database-service")
+            .await?
+            .get(0)
+            .unwrap()
+    );
 
     let full_addr = format!("{}:{}", &addr, port);
     let address = full_addr.parse().expect("Invalid address");
     let character_db_client = Arc::new(CharacterDbClient::connect(&db_url).await?);
-    let character_service = MyCharacterService {
-        character_db_client,
-    };
+    let character_service = MyCharacterService { character_db_client };
     let (mut health_reporter, health_service) = tonic_health::server::health_reporter();
-    health_reporter.set_serving::<CharacterServiceServer<MyCharacterService>>().await;
+    health_reporter
+        .set_serving::<CharacterServiceServer<MyCharacterService>>()
+        .await;
 
     tonic::transport::Server::builder()
         .add_service(health_service)