Make number of uses configurable (in addition to LPL_USE_ONCE)

[ValCanBuild]

I've had a few issues with certain email security systems (like outlook https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/atp-safe-links?view=o365-worldwide ) doing verification on login links we send. This means they visit the link before the user, which records it as used and the user themselves can't then login.

Not sure what the best solution to this would be - my alternative is to turn off LPL_USE_ONCE but I rather not. Perhaps tracking how many times the link was used and setting a maximum number of usages would be a good alternative?

Like setting LPL_NUM_USAGES, which I can then set to 2, or 3 in order to tackle this issue.

[edgrosvenor]

@ValCanBuild I'd definitely be open to adding this but I don't have time to tackle it myself right now. If you can submit a PR, I'd welcome it.

[chucklin72]

I ran into the same issue