feat(engine, snapshot): snapshot hook

[shekhirin]

Ref #4588

This PR adds (but doesn't enable yet) an engine hook for snapshotting and introduces a snapshot crate for everything related to creation of snapshots, i.e. the Snapshotter routine that will be triggered by SnapshotHook from the engine.

[codecov]

Codecov Report

Merging #4690 (54b0ee9) into main (c6ef9d7) will increase coverage by 0.00%.
Report is 1 commits behind head on main.
The diff coverage is 66.54%.

Files	Coverage Δ
...es/consensus/beacon/src/engine/hooks/controller.rs	79.41% <100.00%> (ø)
crates/consensus/beacon/src/engine/hooks/mod.rs	55.55% <ø> (ø)
crates/consensus/beacon/src/engine/mod.rs	73.14% <100.00%> (-0.07%)	⬇️
crates/snapshot/src/error.rs	0.00% <0.00%> (ø)
crates/consensus/beacon/src/engine/hooks/prune.rs	75.00% <27.27%> (-2.93%)	⬇️
crates/snapshot/src/snapshotter.rs	94.68% <94.68%> (ø)
...ates/consensus/beacon/src/engine/hooks/snapshot.rs	0.00% <0.00%> (ø)

... and 6 files with indirect coverage changes

Flag	Coverage Δ
integration-tests	15.55% <0.00%> (-0.06%)	⬇️
unit-tests	62.73% <66.54%> (+0.01%)	⬆️

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

Components	Coverage Δ
reth binary	32.06% <ø> (ø)
blockchain tree	83.76% <ø> (ø)
pipeline	88.45% <ø> (ø)
storage (db)	73.31% <ø> (+0.02%)	⬆️
trie	94.48% <ø> (ø)
txpool	49.54% <ø> (ø)
networking	76.46% <ø> (+0.01%)	⬆️
rpc	57.79% <ø> (ø)
consensus	61.41% <11.57%> (-1.24%)	⬇️
revm	28.54% <ø> (ø)
payload builder	8.16% <ø> (ø)
primitives	85.28% <ø> (+0.01%)	⬆️

[mattsse]

style nits