feat: implement erase methods in webcc::map for iterator and key-based removal

Author: io-eric

include/webcc/core/map.h

@@ -122,6 +122,30 @@ namespace webcc
         const_iterator begin() const { return const_iterator{data_.data()}; }
         const_iterator end() const { return const_iterator{data_.data() + data_.size()}; }
 
+        iterator erase(iterator pos)
+        {
+            if (pos == end())
+            {
+                return pos;
+            }
+
+            size_t index = static_cast<size_t>(pos.ptr - data_.data());
+            data_.erase(index);
+            return iterator{data_.data() + index};
+        }
+
+        size_t erase(const Key &key)
+        {
+            int idx = index_of(key);
+            if (idx < 0)
+            {
+                return 0;
+            }
+
+            data_.erase(static_cast<size_t>(idx));
+            return 1;
+        }
+
         bool empty() const { return data_.empty(); }
         size_t size() const { return data_.size(); }
         void clear() { data_.clear(); }