ZB fetchClosedOrders 'stop'
ZB fetchClosedOrders 'stop'

Added stop order functionality for fetchClosedOrders:
```
node examples/js/cli zb fetchClosedOrders BTC/USDT:USDT undefined undefined '{"stop":"true","orderType":"1"}'

zb.fetchClosedOrders (BTC/USDT:USDT, , , [object Object])
2022-04-14T07:00:11.959Z iteration 0 passed in 497 ms

                 id |       clientOrderId |     timestamp |                 datetime | lastTradeTimestamp |        symbol |  type | timeInForce | postOnly | side | price | stopPrice | average | cost | amount | filled | remaining | status | fee | trades | fees
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
6920259840032057344 | 6896693805014120448 | 1649918518074 | 2022-04-14T06:41:58.074Z |                    | BTC/USDT:USDT | limit |             |    false |    1 | 41160 |     41160 |         |      |  0.002 |        |           | closed |     |     [] |   []
1 objects
```

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