[LBP] Max allocation cap per address

[jubeira]

Hook that doesn't allow one address to get more than X project tokens.

This doesn't really work in practice without some sort of sybil protection.

[jubeira]

We can add this functionality to the KYC hook #1599.

That way sybils are filtered offchain, and we can enforce a max allocation per address on-chain efficiently.

If only KYC is needed, the cap can be set to infinite during setup to effectively disable that functionality.