feat(multicall): add CallItem to dynamic builder (#2307)

Author: yash-atreya

Diff for: crates/provider/src/provider/multicall/mod.rs

@@ -177,6 +177,12 @@ where
         self
     }
 
+    /// Add a dynamic [`CallItem`] to the builder
+    pub fn add_call_dynamic(mut self, call: CallItem<D>) -> Self {
+        self.calls.push(call.to_call3_value());
+        self
+    }
+
     /// Extend the builder with a sequence of calls
     pub fn extend(
         mut self,
@@ -187,6 +193,14 @@ where
         }
         self
     }
+
+    /// Extend the builder with a sequence of [`CallItem`]s
+    pub fn extend_calls(mut self, calls: impl IntoIterator<Item = CallItem<D>>) -> Self {
+        for call in calls {
+            self = self.add_call_dynamic(call);
+        }
+        self
+    }
 }
 
 impl<T, P, N> MulticallBuilder<T, &P, N>