Implement API setup with configuration management and startup tasks

- Add `Cargo.toml` for API with dependencies.
- Create `config.rs` for managing application settings.
- Implement logging and server settings in `config.rs`.
- Add `main.rs` to initialize the application and handle database connections.
- Introduce `task` module with startup tasks, including database migrations.
- Update `.gitignore` to exclude `config.yaml` and remove `.gitkeep`.

apps/api/src/tasks/startup.rs

@@ -0,0 +1,25 @@
+use migration::migrate_database;
+use tracing::{debug, info};
+
+use crate::config::ProgramSettings;
+
+pub async fn run_startup_tasks(config: &ProgramSettings) -> Result<(), Box<dyn std::error::Error>> {
+    // Here you can add any startup tasks you want to run when the application starts.
+    info!("Running startup tasks...");
+    if config.database.migrate_on_startup {
+        run_database_migrations(&config.database.url).await?;
+    } else {
+        info!("Database migration on startup is disabled. Skipping migration.");
+    }
+
+    Ok(())
+}
+
+async fn run_database_migrations(db_url: &str) -> Result<(), Box<dyn std::error::Error>> {
+    // Logic to run database migrations
+    info!("Running database migrations...");
+    debug!("Database URL: {}", db_url);
+    migrate_database(db_url).await.map_err(Box::new)?;
+    info!("Database migrations completed.");
+    Ok(())
+}