add deposit request file

consensus/types/src/deposit_request.rs

@@ -0,0 +1,37 @@
+use crate::test_utils::TestRandom;
+use crate::{Hash256, PublicKeyBytes, Signature};
+use serde::{Deserialize, Serialize};
+use ssz_derive::{Decode, Encode};
+use test_random_derive::TestRandom;
+use tree_hash_derive::TreeHash;
+
+#[derive(
+    arbitrary::Arbitrary,
+    Debug,
+    PartialEq,
+    Eq,
+    Hash,
+    Clone,
+    Serialize,
+    Deserialize,
+    Encode,
+    Decode,
+    TreeHash,
+    TestRandom,
+)]
+pub struct DepositRequest {
+    pub pubkey: PublicKeyBytes,
+    pub withdrawal_credentials: Hash256,
+    #[serde(with = "serde_utils::quoted_u64")]
+    pub amount: u64,
+    pub signature: Signature,
+    #[serde(with = "serde_utils::quoted_u64")]
+    pub index: u64,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    ssz_and_tree_hash_tests!(DepositRequest);
+}