feat(rpc): add get pending user operation by sender nonce RPC

[dancoombs]

Proposed Changes

• Add new RPC method rundler_getPendingUserOperationBySenderNonce
• See rpc.md for description

[codecov]

Codecov Report

Attention: Patch coverage is 1.11111% with 89 lines in your changes missing coverage. Please review.

Project coverage is 60.37%. Comparing base (12fc555) to head (7e4a486).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/pool/src/server/remote/client.rs	0.00%	29 Missing ⚠️
crates/pool/src/server/remote/server.rs	0.00%	20 Missing ⚠️
crates/rpc/src/rundler.rs	0.00%	19 Missing ⚠️
crates/pool/src/server/local.rs	0.00%	18 Missing ⚠️
crates/pool/src/mempool/uo_pool.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/pool/src/mempool/mod.rs	100.00% <ø> (ø)
crates/types/src/pool/traits.rs	100.00% <100.00%> (ø)
crates/pool/src/mempool/uo_pool.rs	93.51% <0.00%> (-0.14%)	⬇️
crates/pool/src/server/local.rs	44.50% <0.00%> (-1.21%)	⬇️
crates/rpc/src/rundler.rs	0.00% <0.00%> (ø)
crates/pool/src/server/remote/server.rs	0.00% <0.00%> (ø)
crates/pool/src/server/remote/client.rs	0.00% <0.00%> (ø)

Flag	Coverage Δ
unit-tests	60.37% <1.11%> (-0.16%)	⬇️

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

Components	Coverage Δ
rundler binary	0.00% <ø> (ø)
builder	75.58% <ø> (ø)
dev	∅ <ø> (∅)
pool	66.69% <0.00%> (-0.52%)	⬇️
provider	25.56% <ø> (ø)
rpc	29.09% <0.00%> (-0.26%)	⬇️
sim	81.71% <ø> (ø)
tasks	∅ <ø> (∅)
types	69.65% <100.00%> (+<0.01%)	⬆️
utils	33.87% <ø> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.