completed basic functions

src/properties.rs

@@ -0,0 +1,27 @@
+use std::collections::HashMap;
+
+pub struct Properties {
+    pub(crate) properties: HashMap<String, Property>
+}
+
+impl Properties {
+    pub(crate) fn new() -> Self {
+        Self { 
+            properties: HashMap::new() 
+        }
+    }
+}
+
+pub enum Property {
+    Integer(i32),
+    Text(String),
+}
+
+impl std::fmt::Display for Property {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Integer(i) => write!(f, "{}", i),
+            Self::Text(t) => write!(f, "{}", t),
+        }
+    }
+}