Function init

init<V extends Transitions>(
    stateMachine:
        | Transitions
        | Machine<V>
        | Readonly<Record<string, readonly StateTargetStrict<Transitions>[]>>,
    initialState?: StateNames<V>,
): MachineState<V>
Initialises a state machine
```
const desc = {
 pants: ['shoes','socks'],
 socks: ['shoes', 'pants'],
 shoes: 'shirt',
 shirt: null
}
// Defaults to first key, 'pants'
let sm = StateMachine.init(descr);
// Move to 'shoes' state
sm = StateMachine.to(sm, 'shoes');
sm.state; // 'shoes'
sm.visited; // [ 'pants' ]
StateMachineLight.isDdone(sm); // false
StateMachineLight.possible(sm); // [ 'shirt' ]
```
Type Parameters
- VextendsTransitions
Parameters
- stateMachine:
      | Transitions
      | Machine<V>
      | Readonly<Record<string, readonly StateTargetStrict<Transitions>[]>>
  Settings for state machine
- OptionalinitialState: StateNames<V>
  Initial state name
Returns MachineState<V>