Feature: output builtin add_attribute method (#1691)

Problem: some OS hints need to add attributes to the output builtin. The
Python implementation defines an `add_attribute` method that is not
present in `cairo-vm`.

Solution: port the `add_attribute` method.

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 #### Upcoming Changes
 
+* feat: output builtin add_attribute method [#1691](https://github.com/lambdaclass/cairo-vm/pull/1691)
+
 * feat: Add zero segment [#1668](https://github.com/lambdaclass/cairo-vm/pull/1668)
 
 * feat: Bump cairo_lang to 0.13.1 in testing env [#1687](https://github.com/lambdaclass/cairo-vm/pull/1687)

vm/src/vm/runners/builtin_runner/output.rs

@@ -129,6 +129,10 @@ impl OutputBuiltinRunner {
         }
     }
 
+    pub fn add_attribute(&mut self, name: String, value: Vec<usize>) {
+        self.attributes.insert(name, value);
+    }
+
     pub fn get_additional_data(&self) -> BuiltinAdditionalData {
         BuiltinAdditionalData::Output(OutputBuiltinAdditionalData {
             pages: self.pages.clone(),
@@ -611,6 +615,18 @@ mod tests {
         )
     }
 
+    #[test]
+    pub fn add_attribute() {
+        let mut builtin = OutputBuiltinRunner::new(true);
+        assert!(builtin.attributes.is_empty());
+
+        let name = "gps_fact_topology".to_string();
+        let values = vec![0, 12, 30];
+        builtin.add_attribute(name.clone(), values.clone());
+
+        assert_eq!(builtin.attributes, HashMap::from([(name, values)]));
+    }
+
     #[test]
     fn get_public_memory() {
         let mut builtin = OutputBuiltinRunner::new(true);