[#496] pkg/innerring: provide wrappers to processors

The only thing we need hashes for is to process notifications.
Balance contract if left for now, as it has some initialization.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

pkg/morph/client/balance/transfer.go

@@ -56,3 +56,18 @@ func (c *Client) TransferX(args TransferXArgs) error {
 
 	return nil
 }
+
+// Mint invokes `mint` method of the balance contract.
+func (c *Client) Mint(to []byte, amount int64, id []byte) error {
+	return c.client.Invoke(c.mintMethod, to, amount, id)
+}
+
+// Burn invokes `burn` method of the balance contract.
+func (c *Client) Burn(to []byte, amount int64, id []byte) error {
+	return c.client.Invoke(c.burnMethod, to, amount, id)
+}
+
+// Lock invokes `lock` method of the balance contract.
+func (c *Client) Lock(id, user, lock []byte, amount, dueEpoch int64) error {
+	return c.client.Invoke(c.lockMethod, id, user, lock, amount, dueEpoch)
+}