feat(server-framework): add Server trait, Encode/Decode, async executor, syscall wrappers, and mock arch for host testing

crates/server-framework/src/lib.rs

@@ -1,14 +1,11 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
-}
+#![no_std]
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+pub mod async_syscall;
+pub mod codec;
+pub mod executor;
+pub mod select;
+pub mod server;
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
-}
+pub use codec::{Decode, Encode};
+pub use executor::block_on;
+pub use server::{serve, Server};