PACT commands builder

[boterop]

ℹ️ This issue is an Epic 🎯

Context

This epic defines a model for the construction of PACT command payloads.

Objective

To build command payloads in a composable and semantic manner.

%Command{} = cmd =
  [] # opts
  |> Kadena.Pact.ExecCommand.new()
  |> Kadena.Pact.ExecCommand.set_network(:testnet04)
  |> Kadena.Pact.ExecCommand.add_data(%{})
  |> Kadena.Pact.ExecCommand.add_keypairs([%Keypair{},...])
  |> Kadena.Pact.ExecCommand.add_signer(%Signer{})
  |> Kadena.Pact.ExecCommand.add_signers([%Signers{},...])
  |> Kadena.Pact.ExecCommand.add_metadata(%MetaData{})
  |> Kadena.Pact.ExecCommand.add_nonce("")
  |> Kadena.Pact.ExecCommand.build() :: %Command{}

Checklist

• PACT Command behaviour and callbacks #132
• Continuation command implementation #133
• Execution command implementation #134