Transaction history optimizations

[sisou]

What's in this pull request?

Two optimizations for requesting and receiving transactions by address as added in

• Create the TransactionsProof request #1346
• Expose getTransactionsByAddress to JS #1356

1. Change TransactionsByAddress network messages into TransactionReceiptsByAddress and only transmit transaction hashes and their block number, not whole ExtendedTransactions. The whole extended transactions are part of the following TransactionsProof messages, and are used from there when retrieved. By only sending transaction receipts in the first round-trip, we prevent the double-sending of whole extended transactions over the network.
2. In the client, batch received transaction receipts by epoch when requesting their proof, reducing number of proofs requested if more than one transaction is in the same epoch, making the process more efficient for both requester and responder nodes.

Pull request checklist

• All tests pass. The project builds and runs.
• I have resolved any merge conflicts.
• I have resolved all clippy and rustfmt warnings.

[codecov]

Codecov Report

Patch coverage: 4.54% and project coverage change: -0.02 ⚠️

Comparison is base (22f575c) 66.15% compared to head (2309cb1) 66.13%.

Additional details and impacted files

@@              Coverage Diff              @@
##           albatross    #1386      +/-   ##
=============================================
- Coverage      66.15%   66.13%   -0.02%     
=============================================
  Files            408      408              
  Lines          52193    52205      +12     
=============================================
  Hits           34528    34528              
- Misses         17665    17677      +12     

Flag	Coverage Δ
unittests	66.13% <4.54%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
consensus/src/consensus/consensus_proxy.rs	5.94% <0.00%> (-0.38%)	⬇️
consensus/src/messages/handlers.rs	61.62% <0.00%> (-1.40%)	⬇️
consensus/src/messages/mod.rs	21.42% <ø> (ø)
consensus/src/consensus/mod.rs	98.24% <100.00%> (ø)
validator/src/micro.rs	93.02% <0.00%> (-0.78%)	⬇️
handel/src/aggregation.rs	91.91% <0.00%> (-0.60%)	⬇️
handel/src/todo.rs	87.30% <0.00%> (+3.17%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.