refactor dev helpers to use chain object directly instead of sending messages over WebSocket

[xlc]

chopsticks/packages/utils/src/index.ts

Lines 98 to 115 in 8a286d1

	dev: {
	newBlock: (param?: Partial<NewBlockParams>): Promise<string> => {
	return ws.send('dev_newBlock', [param])
	},
	setStorage: (values: StorageValues, blockHash?: string) => {
	return ws.send('dev_setStorage', [values, blockHash])
	},
	timeTravel: (date: string | number) => {
	return ws.send<number>('dev_timeTravel', [date])
	},
	setHead: (hashOrNumber: string | number) => {
	return ws.send('dev_setHead', [hashOrNumber])
	},
	},
	async teardown() {
	await api.disconnect()
	await close()
	},

There is little reason to send those messages over WebSocket. Should just use the Blockchain object directly.