Allow for "id" to be optionally passed into multicall for easier reference

[lootboi]

Problem

Working with hundreds of requests, to different contracts, for different reasons, all at once through the mutlticall method leads to instances where developers have to use workaround methods to filter out the different results for parsing.

Solution

Allowing a unique identifier to be passed along with each contract object gives developers an easier way to filter results without significant workaround.

Current implementation

const results = await publicClient.multicall({
contracts: [{ 
     address: <address>,
     abi: <abi>,
     functionName: <functionName>
     }]
})

// allowFailure == true
results = [
  {
  result: <result>,
  status: <status>
  }
]

// allowFailure == false
results = [<result>]

Proposed implementation

const results = await publicClient.multicall({
contracts: [{ 
     address: <address>,
     abi: <abi>,
     functionName: <functionName>,
     id: <id string>
     }]
})

// allowFailure == true
results = [
  {
  result: <result>,
  status: <status>,
   id: <id string>
  }
]

// allowFailure == false
results = [{result: <result>, id: <id string>}]

[MidnightLightning]

This seems related to this discussion: #1699