add irc notice

appview/pages/templates/user/login.html

···
                     >
                         <span>login</span>
                     </button>
+
                 </form>
+                <p class="text-sm text-gray-500">Repository creation is currently invite-only. Join our IRC for an invite!</p>
                 <p id="login-msg" class="error w-full"></p>
             </main>
         </body>