init basic database folder structure

public/database/src/lib.rs

@@ -0,0 +1,22 @@
+use sea_orm::ConnectOptions;
+
+pub async fn get_connection<T: FnOnce(&mut ConnectOptions) -> &mut ConnectOptions>(
+    connection_string: &str,
+    option_fn: Option<T>,
+) -> Result<sea_orm::DatabaseConnection, sea_orm::DbErr> {
+    use sea_orm::Database;
+
+    let mut opt = ConnectOptions::new(connection_string.to_string());
+    opt.max_connections(10)
+        .min_connections(0)
+        .connect_timeout(std::time::Duration::from_secs(8))
+        .idle_timeout(std::time::Duration::from_secs(8))
+        .test_before_acquire(true)
+        .sqlx_logging(false);
+
+    if let Some(option_fn) = option_fn {
+        option_fn(&mut opt);
+    }
+
+    Database::connect(opt).await
+}