Update asphalt.lock.toml with each successful upload

[nightcycle]

Hello! Really love this tool, however I am uploading thousands of assets with it - assuming just under 2s per upload this can mean a single sync can take hours. This is understandable (the cost of game development on Roblox) however on such long time-spans things can go wrong. Maybe my computer will go to sleep, maybe I'll accidentally close the terminal, maybe I'll lose internet - these have all happened to me in the past when doing bulk uploads with other solutions.

Since the bulk of the runtime is spent waiting for API responses, I think there'd be more than enough time to update asphalt.lock.toml with the entries as they're completed. This way if it crashes, I can start where I left off rather than have to reupload all of them.

Thank you!