New patch state, key, account API

[ChaoticTempest]

So far only Worker::patch_state is available for users to patch values into, with #124 trying to add the rest (patch_account, patch_keys), but that hasn't had much progress for a while.

Instead of that, I suggest a simpler API that should be easier to add.

We can have a Worker::<Sandbox>::patch(AccountId) which very similar and consistent with APIs like {Account, Contract}::batch(AccountId) that can be a builder that takes multiple entries to patching state or keys, along with patching account as well:

worker.patch(AccountId)
    .access_key(public_key, AccessKey::function_call_access())
    .access_key(public_key, AccessKey::full_access())
    .access_keys(impl Iterator<(PublicKey, AccessKey)>)
    .state(key: &[u8], val: &[u8])
    .state(...)
    .states(impl Iterator<(&[u8], &[u8])>)
    .account(AccountDetails)
    // or change up the account from what's currently on the chain
    .account_from_current(|account: AccountDetails| {
         account.balance = 10000;
         account
    })
    .await?;

We can also continue to provide the non-builder versions as well as to not require switching over to this syntax for users of patch_state already, and have two newer API surfaces patch_key(AccountId, AccessKey) and patch_account(AccountId, AccountDetails)