* Restructures `Transactor::preflight` to create several functions that will remove the need for error-prone boilerplate code in derived classes' implementations of `preflight`.
This change is to improve code coverage (and to simplify #5720 and #5725); there is otherwise no change in functionality. The change adds basic tests for `STInteger` and `STParsedJSON`, so it becomes easier to test smaller changes to the types, as well as removes `STParsedJSONArray`, since it is not used anywhere (including in Clio).
- Amendment: fixDelegateV1_1
- In DelegateSet, disallow invalid PermissionValues like 0, and transaction values when the transaction's amendment is not enabled. Acts as if the transaction doesn't exist, which is the same thing older versions without the amendment will do.
- Payment burn/mint should disallow DEX currency exchange.
- Support MPT for Payment burn/mint.
This change implements the account permission delegation described in XLS-75d, see https://github.com/XRPLF/XRPL-Standards/pull/257.
* Introduces transaction-level and granular permissions that can be delegated to other accounts.
* Adds `DelegateSet` transaction to grant specified permissions to another account.
* Adds `ltDelegate` ledger object to maintain the permission list for delegating/delegated account pair.
* Adds an optional `Delegate` field in common fields, allowing a delegated account to send transactions on behalf of the delegating account within the granted permission scope. The `Account` field remains the delegating account; the `Delegate` field specifies the delegated account. The transaction is signed by the delegated account.
