Adjust TS wax code/tests to latest beekeeper changes

Changes done in beekeeper project require to supplement each public key passed to its interface by a prefix. All tests pointing public keys should be supplemented accordingly (we can consider to extend wax interface by function/constant returning standard Hive public prefix: STM). All functions which are evaluating public keys (i.e. from signatures) also should return prefixed value. API description should be also adjusted.