add email sent for event

app/Views/administrator/events/create_event.php

@@ -87,6 +87,19 @@
             </div>
         </div>
 
+        <div class="card mb-3">
+            <div class="card-header">Parent Email Broadcast</div>
+            <div class="card-body">
+                <div class="form-check">
+                    <input class="form-check-input" type="checkbox" id="send_email_parent" name="send_email_parent" value="1">
+                    <label class="form-check-label" for="send_email_parent">
+                        Send one event email to all parents and add all parent emails in CC
+                    </label>
+                </div>
+                <div class="form-text">The email is sent once. The school sender address stays in To, and all parent emails are placed in CC.</div>
+            </div>
+        </div>
+
         <button type="submit" class="btn btn-success">Create Event</button>
         <a href="<?= site_url('administrator/events') ?>" class="btn btn-secondary">Cancel</a>
     </form>