Transfer from one to many groups

[pragmaxim]

Demonstration of the future node's multi group transfer and how it could simplify transfers on Lending example.
Done some perf testing too :

1. Distributing alphs among users completed in 174 milliseconds // this initial mutli-group transfer is very fast
2. Check user0, user1, user2 balances completed in 742 milliseconds
3. user0 lends to user1 and user2 completed in 831 milliseconds // but further lending multi-group transfers are slow
4. user1 lends to user2 completed in 739 milliseconds
5. Check user0, user1, user2 balances completed in 733 milliseconds
6. user1 returns to user0 completed in 438 milliseconds
7. user2 returns to user0 and user1 completed in 799 milliseconds
8. Check user0, user1, user2 balances completed in 706 milliseconds

The reason of the latter multi-group transfers taking longer time than the first one is that this is devnet where block is internally mined for incoming transactions.

Also please take into consideration that this is my laptop with many apps running, not a benchmark.

[pragmaxim]

Please let me know if the SignerProviderSimple can have this method public. Not important much, it would be easier to have a single method for build+sign+submit with just a PrivateKeyWallet

[pragmaxim]

Guys openapi tests and tests are failing because the update-schema:alephium script is pointing to alephium/ repo where this endpoint does not exist yet, they pass locally though.

[pragmaxim]

@h0ngcha0 the lending and transactions multi-group tests started failing after merging the new features in dev-alephium/master on error :

Failed in validating tx `foo` due to NonExistInput: `bar` 

Tried to troubleshoot but it will be a longer search, please let me know if you can think of the reason 🙏

[h0ngcha0]

@h0ngcha0 the lending and transactions multi-group tests started failing after merging the new features in dev-alephium/master on error :

Failed in validating tx `foo` due to NonExistInput: `bar` 

Tried to troubleshoot but it will be a longer search, please let me know if you can think of the reason 🙏

I think there is a race condition here due to

 return await Promise.all(
   buildTxResults.map(async (tx) => {
     return await signer.signAndSubmitUnsignedTx({
       signerAddress: params.signerAddress,
       unsignedTx: tx.unsignedTx
     })
   })
 )

devnet mine one tx into block at a time, so if the 2nd tx gets in before the 1st one, it will report NonExistInput error. If we do something like:

    const results: SignTransferTxResult[] = []
    for (const tx of buildTxResults) {
      const result = await signer.signAndSubmitUnsignedTx({
        signerAddress: params.signerAddress,
        unsignedTx: tx.unsignedTx
      })
      results.push(result)
    }
    return results

it should work.

[Lbqds]

LGTM 👍

[h0ngcha0]

LGTM 👍