Bootstrap geth Rust workspace

crates/geth-crypto/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "geth-crypto"
+version = "0.1.0"
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+
+[dependencies]
+blake3.workspace = true
+ed25519-dalek.workspace = true
+hex.workspace = true
+rand_core.workspace = true
+serde.workspace = true
+thiserror.workspace = true
+geth-types = { path = "../geth-types" }
+
+[dev-dependencies]
+tempfile.workspace = true