Third party apps portal (#3782)

* Added third party apps portal page stub

* [WIP] third party apps portal page

* Added portal page third party apps

Added page to manage OAuth 2.0 active sessions

* [Fix] Typo me.html

* frappe/www/third_party_apps.

* [Fix] Added column for last log in

payments/templates/includes/third_party_apps.js

@@ -0,0 +1,9 @@
+frappe.ready(() => {
+	$(".btn-delete-app").on("click", function(event) {
+		frappe.call({
+			method:"frappe.www.third_party_apps.delete_client",
+			args: {"client_id": $(this).data("client_id"),
+			}
+		}).done(r => location.href="/third_party_apps");
+	});
+});