Allow arbitrary bytes calldata for migrations

[saucepoint]

Currently airlock.migrate(address asset) and ILiquidityMigrator.migrate(...) feels a little restrictive for "BYO migrator" functionality

I.e. to migrate to a v4 pool, asset creators may want to encode and configure a few different CLAMM positions. More so, other DEXes may require different parameters for liquidity provision

[clemlak]

Good point.

[clemlak]

Main problem is that airlock.migrate(...) is permissionless, this means that we cannot really trust its inputs and this makes me uncomfortable to forward "random" bytes to ILiquidityMigrator.migrate(...).