move mlflow to its own command

src/commands/train.py

@@ -101,7 +101,7 @@ def start(config: str = CONFIG_OPT) -> None:
     CONSOLE.print(f"[green]✓[/green] Job submitted: [bold]{job_name}[/bold]")
     if run_id:
         CONSOLE.print(f"MLflow run: [cyan]{run_id}[/cyan]")
-        CONSOLE.print("Open MLflow: [cyan]qc-cli infra mlflow-url[/cyan]")
+        CONSOLE.print("Open MLflow: [cyan]qc-cli mlflow open[/cyan]")
     CONSOLE.print("Track progress: [cyan]qc-cli train status[/cyan]")
 
 
@@ -151,7 +151,7 @@ def status(
             st.set_latest_experiment_model_version(version)
             CONSOLE.print(f"MLflow model version: [cyan]{version}[/cyan] ([cyan]experiment-latest[/cyan])")
     if run_id and cfg.mlflow.mode is not MlflowMode.disabled:
-        CONSOLE.print("Open MLflow: [cyan]qc-cli infra mlflow-url[/cyan]")
+        CONSOLE.print("Open MLflow: [cyan]qc-cli mlflow open[/cyan]")
 
 
 @app.command(name="list")