Add example of transaction creation using wax

examples/python/create_and_sign_transation.py

+from beekeepy import Beekeeper
+from wax import create_wax_foundation
+from wax.proto.asset_pb2 import asset
+from wax.proto.transfer_pb2 import transfer
+
+PASSWORD = "pass"
+WALLET_NAME = "alice"
+
+wax = create_wax_foundation()
+keys = wax.suggest_brain_key()
+
+trx = wax.create_transaction_with_tapos("0576f3eb552fa3c7b8b103f1016c15ce2a259a0f")
+trx.push_operation(transfer(from_account="alice", to_account="bob", amount=asset(**wax.hbd.satoshis(10).dict())))
+
+
+with Beekeeper.factory() as beekeeper, beekeeper.create_session() as session, (
+    session.create_wallet(name=WALLET_NAME, password=PASSWORD)
+    if WALLET_NAME not in [w.name for w in session.wallets_created]
+    else session.open_wallet(name=WALLET_NAME).unlock(PASSWORD)
+) as wallet:
+    wallet.import_key(private_key=keys.wif_private_key)
+    trx.sign(wallet=wallet, public_key=keys.associated_public_key)
+
+print(f"Signed transaction: {trx.to_api_json()}")