JSSDK: redesign the contract query arguments orders, security updates, docs

[Leechael]

This PR propose to continue evolving the design for JS-SDK.

1. For queries PinkContractPromise, we unified it as options in the next. This is a breaking change. Checkout follow up code snippet:

const cert = await Phala.signCertificate({ signer, api })

// Before
await contractPromise.query.getTotalBadges(address, cert)

// After
await contractPromise.query.getTotalBadges(address, { cert })

2. A small design learned from Acala.js:

import { ApiPromise } from '@polkadot/api';
import { WsProvider } from '@polkadot/rpc-provider';
import { options } from '@phala/sdk';

async function main() {
    const provider = new WsProvider('wss://phala.api.onfinality.io/public-ws');
    const api = new ApiPromise(options({ provider }));
    await api.isReady;

    // use api
}

3. Cluster object

We haven't handle the situation when no cluster has been registered on chain. Also, we haven't organize cluster information well, so we try to address that as well.

4. More test cases

A nice to have goal that add more test cases.