Handle steamcmd refusal to update

[HunterZ]

Sometimes steamcmd just stubbornly refuses to apply an update.

I can think of a couple ways to handle this:

1. Wipe or rename the steamapps folder after too many failures

• This is the common wisdom solution
• This may necessitate setting branch in RLS config, as closing RLS without the steamapps folder regenerating could result in forgetting which branch was selected
• Probably want to make this configurable behavior, as some server owners may prefer to do it manually out of caution

2. Use DepotDownloader (https://github.com/SteamRE/DepotDownloader) instead of steamcmd

• This would be its own whole thing, so probably a last resort
• I'm not sure if it's less efficient as a first-line updater choice - Steam may be able to download less data when updating
• Could be cranky about unauthenticated downloads (I just don't know)