Start work on event creation

src/utils.rs

@@ -0,0 +1,9 @@
+use std::time::{SystemTime, UNIX_EPOCH};
+
+pub fn millis_since_unix_epoch() -> js_int::UInt {
+    (SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap()
+        .as_millis() as u32)
+        .into()
+}