* prepare-pay-onchain: add option for drain in req
* Fix clippy
* ChainSwapStateHandler: gracefully handle building both drain and non-drain lockups
* Send Chain swap: use standard feerate when estimating lockup tx fee
* UDL: move new drain field above the last PreparePayOnchainRequest optional field
* UDL: move new drain field optional
* prepare-pay-onchain: treat normal payment as drain if receiver amount is high enough
If the receiver amount is as high as it would be in case of drain, treat the current prepare-pay-onchain as drain, even if the drain flag is not set.
* build_drain_tx: add optional amount validation
* Add PayOnchainAmount enum to cover amount types (drain, receiver)
* Add ability to find max_receiver_amount_sat for non-drain sends
* Revert "Add ability to find max_receiver_amount_sat for non-drain sends"
This reverts commit 60ee1c768021810f72bc64a8ada69d35b638185e.
* prepare_pay_onchain: treat drain and non-drain cases separately
If the non-drain case is chosen with a receiver_amount equivalent to what drain would have calculated, it results in an error. For drain, the caller has to explicitly choose PayOnchainAmount::Drain.
* CLI: send-onchain-payment accepts optional amount
* CLI: add docs for send-onchain-payment drain arg
* SDK: expand docs for prepare_pay_onchain
* Re-generate RN bindings
* Re-generate flutter bindings
