Add clearinghouseState websocket subscription

[zlace0x]

Although not listed in official documentation, consider adding clearinghouseState websocket subscription that allows subscription to HIP-3 dex states

[nktkas]

Where exactly did you find this subscription?
I only know the webData2 channel, which contains clearinghouseState.

[zlace0x]

It's seen on ventuals.com testnet, there are two dex specific subscriptions: clearinghouseState & openOrders

[nktkas]

Implemented in v0.24.3