Update getRequiredAttributes function in BaseTransaction

[shuse2]

Description

In order to keep the extensibility, getRequiredAttributes should be updated to return an object

{
  'entity name': { // ex) account
    'property': ['values'] // ex) address: ['xxxL', 'yyyL']
  },
}

Also, we should add abstract function

interface EntityMap { // name to be considered
  'entity name': [Entity],
}
interface RequiredState {
  sender: Account,
  recipient?: Account,
  dependentStates?: EntityMap,
}

abstract processRequiredState(state: EntityMap): RequiredState
throws error on missing state

and update verify, apply and undo function to take RequiredState as an input.