Add new errors for server initialization.

Author: Andrewsooter442

crates/defs/src/error.rs

@@ -1,3 +1,4 @@
+use std::io;
 #[derive(Debug)]
 pub enum DbError {
     ParseError,
@@ -7,3 +8,15 @@ pub enum DbError {
     IndexError(String),
     LockError,
 }
+
+#[derive(Debug)]
+pub enum ServerError{
+    Bind(io::Error),
+    Serve(io::Error),
+}
+
+#[derive(Debug)]
+pub enum AppError {
+    DbError(DbError),
+    ServerError(ServerError),
+}