feat: run pending migrations on app start

src/migrations/mod.rs

@@ -0,0 +1,12 @@
+use diesel_migrations::{embed_migrations, EmbeddedMigrations, MigrationHarness};
+use std::error::Error;
+
+const MIGRATIONS: EmbeddedMigrations = embed_migrations!("migrations");
+
+pub(crate) fn run_migrations() -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
+    let mut connection = crate::server::database_connection::establish_database_connection()?;
+
+    connection.run_pending_migrations(MIGRATIONS)?;
+
+    Ok(())
+}