EVM: Implement getTransactionCount query

[orkunkilic]

Description

Implements eth_getTransactionCount call, aka nonce retrieval. It only supports latest block until we have archival state implementation ready.

Linked Issues

• Related to EVM: Implement basic Ethereum JSON-RPC endpoints. #502 EVM: Implement eth_getTransactionCount endpoint. #882

Testing

Describe how these changes were tested. If you've added new features, have you added unit tests?
Integration tests added.

Docs

Describe where this code is documented. If it changes a documented interface, have the docs been updated?

[codecov]

Codecov Report

Merging #896 (b0ee82b) into nightly (1879a45) will decrease coverage by 0.2%.
The diff coverage is 0.0%.

Files Changed	Coverage Δ
...system/module-implementations/sov-evm/src/query.rs	0.0% <0.0%> (ø)

... and 1 file with indirect coverage changes