Initial commit: Full Crawl API implementation

crates/db/src/connection.rs

@@ -0,0 +1,7 @@
+use sqlx::PgPool;
+
+pub type DbPool = PgPool;
+
+pub async fn create_pool(database_url: &str) -> Result<DbPool, sqlx::Error> {
+    PgPool::connect(database_url).await
+}