new anti-ping-spam functionality

src/ping_limit.rs

@@ -0,0 +1,13 @@
+
+use poise::serenity_prelude::*;
+use regex::Regex;
+
+pub fn extract_mentions(content: &str) -> Vec<UserId> {
+    // Define the regex pattern for user mentions
+    let re = Regex::new(r"<@(\d+)>").unwrap();
+
+    // Find all matches and capture the IDs
+    re.captures_iter(content)
+        .filter_map(|cap| cap.get(1).map(|id| id.as_str().parse().unwrap()))
+        .collect()
+}