Fix: include --plugin in next steps hint after configure connection add (#114)

* Initial plan

* Fix: include --plugin flag in configure connection next steps hint

Co-authored-by: ewega <26189114+ewega@users.noreply.github.com>

* Fix: use scope add subcommand and split next-steps hint into scope+project steps

Co-authored-by: ewega <26189114+ewega@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: ewega <26189114+ewega@users.noreply.github.com>
Co-authored-by: Eldrick Wega <ewega@github.com>

Author: Copilot

cmd/configure_connection_add.go

@@ -181,8 +181,8 @@ func runAddConnection(cmd *cobra.Command, args []string) error {
 		hintOrg = "<org>"
 	}
 	fmt.Println("\nNext steps:")
-	fmt.Printf("  Run 'gh devlake configure scope --org %s' to create a project\n", hintOrg)
-	fmt.Println("  and start collecting data.")
+	fmt.Printf("  Run 'gh devlake configure scope add --plugin %s --org %s' to add scopes\n", def.Plugin, hintOrg)
+	fmt.Println("  Then run 'gh devlake configure project add' to create a project and start collecting data.")
 
 	return nil
 }