Missing access control in `WERC7575Vault` allows unauthorized withdrawals

The unregistering of vaults can be DoSed by a malicious user.

if user increases their participation they could hit a maxUserTokeenAllocationReached error even though it shouldn't

Since the cost of launching a new pool is minimal, an attacker can maliciously consume VirtualTokens.

Incorrect logic for checking isFillPriceValid

`LiquidationBranch::checkLiquidatableAccounts()` executes `for` loop with wrong values, causing array out of bounds to be recovered, the program will not work as expected

payable Modifier in TradingAccountBranch::createTradingAccountAndMulticall