refactor(proto): replace anyhow with thiserror in handshake

proto/src/handshake/errors.rs

@@ -0,0 +1,21 @@
+use thiserror::Error;
+use tokio::io;
+use crate::message::errors::ProtoDeserializeError;
+use crate::reader::errors::{ProtoConsumeError, ProtoPeekError};
+use crate::writer::errors::ProtoWriteError;
+
+#[derive(Debug, Error)]
+pub enum ServerHandshakeError {
+    #[error("startup message not found")]
+    MissingStartupMessage,
+    #[error("reading from socket failed")]
+    Io(#[from] io::Error),
+    #[error("deserialization of inner data failed")]
+    Deserialize(#[from] ProtoDeserializeError),
+    #[error("peeking special message failed")]
+    Peek(#[from] ProtoPeekError),
+    #[error("consuming special message failed")]
+    Consume(#[from] ProtoConsumeError),
+    #[error("writing message to socket failed")]
+    Write(#[from] ProtoWriteError),
+}