Implement starknet.go support for call endpoints

[jelilat]

Implement autogenerated starknet.go code for the following RPC endpoints

• starknet_call
• starknet_estimateFee
• starknet_estimateMessageFee

Additional Context:

• Add starknet.go support #1
• https://github.com/NethermindEth/rpc-request-builder/blob/main/src/api/rpcspec/methods.ts

[AryanGodara]

I'd like to start with this issue, and make my way up from here :)
Please assign this to me @jelilat 😁

[jelilat]

I'd like to start with this issue, and make my way up from here :) Please assign this to me @jelilat 😁

Done

[AryanGodara]

I see a common problem where,

this is the output (also seen in other PRs)

This is the code

 name: "starknet_call",
    params: {
      context,
      request: functionCall,
      block_id,
    },
    starknetJs: ``,
    starknetGo: `package main
    import (
      "context"
      "fmt"
      "log"
      "github.com/NethermindEth/starknet.go/rpc"
    )
        
    func main() {
      rpcUrl := "https://free-rpc.nethermind.io/mainnet-juno/"
      client, err := rpc.NewClient(rpcUrl)
      if err != nil {
        log.Fatal(err)
      }
      provider := rpc.NewProvider(client)
      feltVar := fp.NewElement(1)
      var one uint64 = 1
      blockId := rpc.BlockID{Number: &one, Hash: felt.NewFelt(&feltVar)}
    
      res, err := provider.Call(
        context.Background(),
        rpc.FunctionCall{
          Calldata:           ,
          ContractAddress:    ${contract_address},
          EntryPointSelector: ${entry_point_selector},
        },
        ${block_id},
      )
      if err != nil {
        log.Fatal(err)
      }
    
      fmt.Println(res)
    }`,

It looks like the UI auto renders after detecting the function, this'll need to be updated, at least for golang, where each function takes in a context.Context; and parameters aren't passed in as a simple ring 🤔 . I'm going to work to figure this out, if a different implementation will be needed for go examples.