feat: Adds privacy notice to email verification form

Informs users about data processing related to email and IP
address storage during registration. Enhances transparency
by detailing privacy practices before form submission,
aligning with data protection regulations.

src/synapse_registration/registration/templates/registration/email_form.html

@@ -11,6 +11,11 @@
             <div class="control">{{ form.email }}</div>
             <p class="help is-danger">{{ form.email.errors }}</p>
         </div>
+        <!-- Privacy notice -->
+        <p class="help">We will send you an email with a link to verify your email address.</p>
+        <p class="help">
+            By clicking the button below, you agree that we store your email address and the IP address of the device you are using to send this request for processing your registration.
+        </p>
         <button type="submit" class="button is-link">Verify Email</button>
     </form>
 {% endblock content %}