feat: start to implement node_registry

packages/runtime_executor_rust/src/lib.rs

@@ -0,0 +1,18 @@
+pub struct NodeRegistryCore {
+    storage_path: String,
+}
+
+impl NodeRegistryCore {
+    pub fn new(storage_path: &str) -> NodeRegistryCore {
+        NodeRegistryCore {
+            storage_path: storage_path.to_string()
+        }
+    }
+
+    // Function that takes a string and returns bytes
+    pub fn string_to_bytes(&self, input: &str) -> Vec<u8> {
+        // Combine the initialization argument and input string into bytes
+        let result: Vec<u8> = format!("{} {}", self.storage_path, input).into_bytes();
+        result
+    }
+}