create skeleton for server from design

server/texture-sync-server/src/server_state.rs

@@ -0,0 +1,44 @@
+// TODO: remove on implementation
+#![allow(unused_imports)]
+#![allow(unused_variables)]
+#![allow(dead_code)]
+
+use crate::model::*;
+use crate::protocol::*;
+
+use std::sync::Arc;
+
+pub struct ServerState {
+    // ...
+}
+
+impl ProtocolHandler for ServerState {
+    fn query(&mut self, query: &[String]) -> ProtocolResult<Vec<Texture>> {
+        unimplemented!()
+    }
+
+    fn get_texture_by_id(&mut self, id: String) -> ProtocolResult<Option<Texture>> {
+        unimplemented!()
+    }
+
+    fn get_texture_by_name(&mut self, id: String) -> ProtocolResult<Option<Texture>> {
+        unimplemented!()
+    }
+
+    fn get_texture_file(&mut self, hash: Sha256) -> ProtocolResult<Arc<Vec<u8>>> {
+        unimplemented!()
+    }
+
+    fn get_texture_preview(&mut self, hash: Sha256) -> ProtocolResult<Arc<Vec<u8>>> {
+        unimplemented!()
+    }
+
+    fn replace_texture(
+        &mut self,
+        delete: Option<Texture>,
+        insert: Option<Texture>,
+        insert_texture_data: Option<Vec<u8>>,
+    ) -> ProtocolResult<ReplaceTextureStatus> {
+        unimplemented!()
+    }
+}