bug fixes

veilid-flutter/lib/base64url_no_pad.dart

@@ -0,0 +1,15 @@
+import 'dart:convert';
+import 'dart:typed_data';
+
+String base64UrlNoPadEncode(List<int> bytes) {
+  var x = base64Url.encode(bytes);
+  while (x.endsWith('=')) {
+    x = x.substring(0, x.length - 1);
+  }
+  return x;
+}
+
+Uint8List base64UrlNoPadDecode(String source) {
+  source = base64.normalize(source);
+  return base64.decode(source);
+}