move mlflow to its own command

src/main.py

@@ -1,6 +1,6 @@
 import typer
 
-from src.commands import ai_hub, infra, init, train, upload
+from src.commands import ai_hub, infra, init, mlflow, train, upload
 
 app = typer.Typer(
     help="qc-cli: End-to-end model managment for Qualcomm AI Hub.",
@@ -8,6 +8,7 @@ app = typer.Typer(
 )
 app.add_typer(init.app)
 app.add_typer(upload.app)
+app.add_typer(mlflow.app, name="mlflow")
 app.add_typer(infra.app, name="infra")
 app.add_typer(train.app, name="train")
 app.add_typer(ai_hub.app, name="ai-hub")