Use hashlink over lru for LruCache (#8911)

Use the `LruCache` implementation provided by `hashlink` instead of the current `lru` one.
This is mostly a 1-to-1 swap with only slight API incompatibilities.
I have decided to leave some config files which previously used `NonZeroUsize` but they may not be required anymore and could potentially switch to `usize`.


Co-Authored-By: Mac L <mjladson@pm.me>

beacon_node/store/Cargo.toml

@@ -16,10 +16,10 @@ directory = { workspace = true }
 ethereum_ssz = { workspace = true }
 ethereum_ssz_derive = { workspace = true }
 fixed_bytes = { workspace = true }
+hashlink = { workspace = true }
 itertools = { workspace = true }
 leveldb = { version = "0.8.6", optional = true, default-features = false }
 logging = { workspace = true }
-lru = { workspace = true }
 metrics = { workspace = true }
 milhouse = { workspace = true }
 parking_lot = { workspace = true }