added FAQ on getting a PSBT

It may also be appropriate to update the description of utxopsbt so that the search hits for "psbt" here on github make it clearer that utxopsbt returns what you're seeking.  I'll make that part of this pull request too.
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Dave Scotese 2021-05-09 20:08:15 -07:00 committed by Rusty Russell
parent 8c949be207
commit cb7e7b293f
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@ -164,3 +164,9 @@ Here is an example in Python checking if [one of the `option_static_remotekey` b
>>> bool(0x02aaa2 & ((1 << 12) | (1 << 13)))
True
```
## Technical Questions
### How do I get the `psbt` for RPC calls that need it?
A `psbt` is created and returned by a call to [`utxopsbt` with `reservedok=true`](https://lightning.readthedocs.io/lightning-utxopsbt.7.html?highlight=psbt).