chore(sltt-app): instead of adding -lost to the stored filename, put the file under a folder called lost as a sibling folder to remote and local

[weagale]

Per Eric: "instead of adding -lost to the stored filename, put the file under a folder called lost as a sibling folder to remote and local . Before making that change, create or update the store lost and list (skip) lost tests. Then make the changes to see them pass"