* Update lndrest.py
- added the ability to receive self payments on the node
[issue] You have to enable circular payment on lnd.conf. Note that lnd.conf doesn't allow allow_self_payment parameter, that is why is necessary to define that on transaction.
* feat: add LND rest `"allow_self_payment"` option
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Co-authored-by: Vlad Stan <stan.v.vlad@gmail.com>
