Dedicated ledger JSON-RPC crate

[neysofu]

Description

With this PR, I'm introducing a new crate full-node/sov-ledger-rpc which has two components:

• A jsonrpsee::RpcModule builder for the LedgerDB JSON-RPC API.
• A type-safe client trait RpcClient.

This results in some code deduplication across rollup crates, which can just import the server implementation to serve ledger data. The provided server implementation is also more extensive compared to what we had in demo-rollup, and exposes all getters that LedgerRpcProvider offers.

rollup-template has been modified accordingly.

Testing

Existing test_rpc.rs in demo-rollup, combined with new doc tests and two integration tests.

[codecov]

Codecov Report

Merging #1032 (29cf3ae) into nightly (a0cfbca) will increase coverage by 0.7%.
Report is 1 commits behind head on nightly.
The diff coverage is 93.1%.

Files	Coverage Δ
full-node/db/sov-db/src/ledger_db/rpc.rs	82.2% <100.0%> (+36.6%)	⬆️
full-node/sov-ledger-rpc/src/client.rs	100.0% <100.0%> (ø)
full-node/sov-ledger-rpc/src/lib.rs	100.0% <100.0%> (ø)
full-node/sov-stf-runner/src/lib.rs	100.0% <ø> (ø)
sov-rollup-starter/src/register_rpc.rs	100.0% <ø> (ø)
sov-rollup-starter/src/rollup.rs	91.2% <100.0%> (+1.6%)	⬆️
...m/module-implementations/sov-evm/src/signer/mod.rs	82.7% <0.0%> (-3.0%)	⬇️
full-node/sov-ledger-rpc/src/server.rs	95.4% <95.4%> (ø)
rollup-interface/src/node/rpc/mod.rs	86.9% <83.3%> (ø)

... and 1 file with indirect coverage changes

[bkolad]

LGTM!