feat: add rapidhash to available hashers (#1051)

Author: DaniPopes

crates/core/Cargo.toml

@@ -67,6 +67,7 @@ map = ["alloy-primitives/map"]
 map-hashbrown = ["alloy-primitives/map-hashbrown"]
 map-indexmap = ["alloy-primitives/map-indexmap"]
 map-foldhash = ["alloy-primitives/map-foldhash"]
+map-rapidhash = ["alloy-primitives/map-rapidhash"]
 map-fxhash = ["alloy-primitives/map-fxhash"]
 
 getrandom = ["alloy-primitives/getrandom"]

crates/primitives/Cargo.toml

@@ -120,6 +120,7 @@ std = [
     "ruint/std",
     "alloy-rlp?/std",
     "foldhash?/std",
+    "rapidhash?/std",
     "indexmap?/std",
     "k256?/std",
     "keccak-asm?/std",
@@ -132,6 +133,7 @@ std = [
 ]
 nightly = [
     "foldhash?/nightly",
+    "rapidhash?/nightly",
     "hashbrown?/nightly",
     "hex/nightly",
     "ruint/nightly",
@@ -149,11 +151,12 @@ map = ["dep:hashbrown"]
 map-hashbrown = ["map"]
 map-indexmap = ["map", "dep:indexmap"]
 map-foldhash = ["map", "dep:foldhash"]
+map-rapidhash = ["map", "dep:rapidhash"]
 map-fxhash = ["map", "dep:rustc-hash"]
 
 getrandom = ["dep:getrandom"]
 k256 = ["dep:k256"]
-rand = ["dep:rand", "getrandom", "ruint/rand-09", "rustc-hash?/rand"]
+rand = ["dep:rand", "getrandom", "ruint/rand-09", "rapidhash?/rand", "rustc-hash?/rand"]
 rayon = ["dep:rayon", "hashbrown?/rayon", "indexmap?/rayon"]
 rkyv = ["dep:rkyv", "ruint/rkyv"]
 rlp = ["dep:alloy-rlp", "ruint/alloy-rlp"]

crates/primitives/src/map/hasher.rs

@@ -28,10 +28,16 @@ cfg_if! {
 #[doc(no_inline)]
 pub use foldhash;
 
+#[cfg(feature = "map-rapidhash")]
+#[doc(no_inline)]
+pub use rapidhash;
+
 // Default hasher.
 cfg_if! {
     if #[cfg(feature = "map-foldhash")] {
         type DefaultHashBuilderInner = foldhash::fast::RandomState;
+    } else if #[cfg(feature = "map-rapidhash")] {
+        type DefaultHashBuilderInner = rapidhash::fast::RandomState;
     } else if #[cfg(feature = "map-fxhash")] {
         type DefaultHashBuilderInner = FxBuildHasher;
     } else if #[cfg(any(feature = "map-hashbrown", not(feature = "std")))] {