Improve the return type of deployToDevnet

[Lbqds]

In this PR, I changed the return type of deployToDevnet to:

{
  deployerAddress: string,
  contracts: Record<string, DeployContractExecutionResult>,
  scripts:Record<string, RunScriptResult>
}[]

But it is a bit different from loadDeployments. For loadDeployments, we generate the return type through the deployed contracts. For deployToDevnet, we don't know the return type until the user calls deployToDevnet, so the user needs to do some type conversion manually, here is an example: alephium/nextjs-pages-dapp-template@737cf8f#diff-c44cb9b2c107e64a3654d247df87d052da7c9c4ee019f47ee0f1678fc7d933a7R27-R30

[polarker]

We need to update this template as well: https://github.com/alephium/alephium-web3/blob/master/packages/cli/templates/base/test/token.test.ts#L110-L145

[Lbqds]

Because there are dependencies in @alephium/cli that only work in nodejs env, placing this function within @alephium/cli would lead to frontend issues. So I've moved this function to a separately generated file.