feat(mongodb): support direct URL connection string (#32)

* chore: bump version to 0.2.1

* fix(ci): wait for Release workflow before publishing packages

Changed trigger from release:published to workflow_run on Release
completion, so assets are already uploaded when download starts.

* feat(mongodb): support direct URL connection string

Allow pasting a full MongoDB URI (e.g. mongodb+srv://) to connect
to Atlas clusters, replica sets, and other multi-instance setups.

src/types/database.ts

@@ -20,6 +20,7 @@ export interface ConnectionConfig {
   ssh_password?: string;
   ssh_key_path?: string;
   ssl?: boolean;
+  connection_string?: string;
 }
 
 export interface DatabaseInfo {