feature(#1030): Add ability to create StaticJsonRpcProvider with ConnectionInfo

[applicature-dlitvinov]

Description

Added providerConnectionInfo to the Chain model. It helps to create providers with authorization parameters.

Checklist

• The version field in package.json is incremented following semantic versioning
• The box that allows repo maintainers to update this PR is checked
• I tested locally to make sure this feature/fix works
• This PR passes the Circle CI checks

[applicature-dlitvinov]

#1030 - related to an isuue.

[applicature-dlitvinov]

@Adamj1232 @mahmud-bn @taylorjdawson please review PR.

[applicature-dlitvinov]

@Adamj1232 Could you please review it?

[taylorjdawson]

@applicature-dlitvinov Hey thanks for contributing! We'll take a look at this and get back to you 🙌

[taylorjdawson]

Just a couple comments! Also could you provide an example of how you would use this? Thanks!

[applicature-dlitvinov]

@taylorjdawson
Sometimes we need to use a private network RPC URL with some credentials, It's more secure and more stable than native RPC (Sometimes has crashes or lags).

const onboard = Onboard({
      wallets: [injected],
      chains: [
        {
          id: '0x61',
          token: 'BNB',
          label: 'Binance Testnet',
          rpcUrl: `${CUCTOM_BSC_PRC}`,
          providerConnectionInfo: {
            url: `${CUCTOM_BSC_PRC}`,
            user: `${LOGIN}`,
            password: `${PASSWORD}`
          }
        },
        ...
      ]
    })

[applicature-dlitvinov]

@taylorjdawson Coul. you please review again