refactor: move builder and pool traits to types

[dancoombs]

Closes #415

Proposed Changes

• Moves the pool and builder traits and all associated types to the types crate
• rpc, builder, and pool crates are now all independent

[codecov]

Codecov Report

Attention: Patch coverage is 37.63103% with 1785 lines in your changes are missing coverage. Please review.

Project coverage is 55.22%. Comparing base (639d1e1) to head (88a96ae).

Additional details and impacted files

Files	Coverage Δ
crates/builder/src/bundle_sender.rs	0.00% <ø> (ø)
crates/builder/src/server/remote/protos.rs	0.00% <ø> (ø)
crates/pool/src/mempool/mod.rs	100.00% <100.00%> (+8.87%)	⬆️
crates/pool/src/mempool/paymaster.rs	93.62% <100.00%> (+0.48%)	⬆️
crates/pool/src/mempool/pool.rs	95.78% <100.00%> (+<0.01%)	⬆️
crates/pool/src/mempool/reputation.rs	85.25% <ø> (+5.02%)	⬆️
crates/pool/src/server/remote/server.rs	0.00% <ø> (ø)
crates/provider/src/traits/entry_point.rs	20.00% <ø> (+7.50%)	⬆️
crates/rpc/src/admin.rs	0.00% <ø> (ø)
crates/rpc/src/eth/events/mod.rs	100.00% <ø> (ø)
... and 60 more

... and 25 files with indirect coverage changes

Flag	Coverage Δ
unit-tests	55.22% <37.63%> (-2.08%)	⬇️

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

Components	Coverage Δ
rundler binary	0.00% <0.00%> (ø)
builder	50.64% <16.32%> (-0.68%)	⬇️
dev	0.00% <0.00%> (ø)
pool	65.38% <65.60%> (+0.46%)	⬆️
provider	9.09% <0.77%> (-4.72%)	⬇️
rpc	29.09% <19.12%> (-3.82%)	⬇️
sim	82.85% <38.29%> (-2.32%)	⬇️
tasks	∅ <ø> (∅)
types	66.48% <35.79%> (-7.35%)	⬇️
utils	16.73% <ø> (-0.07%)	⬇️

[dphilipson]

The refactor makes sense! Left a couple comments as I saw them that are unrelated to this PR.