rpcwallet: change getaddress to request a blech32 address

[delta1]

requires ElementsProject/glightning#11 which adds the new addrtype to the rpc client library

fixes #256

[wtogami]

Just checking do past UTXO's in your wallet continue to be spendable after this?

[delta1]

I believe so, this only affects what type of address is requested from the elementsd node. This should behave exactly the same way as elements 22, before this change in 23 ElementsProject/elements#1246

[wtogami]

Does peerswap remain compatible with elements v22 after this change?

[delta1]

yes it should

[grubles]

Tested ACK. 4b86b8a

Tested L-BTC (testnet) swaps with the mentioned glightning patch + this PR against both Elements v22 and the 23.x branch.

Tested mainnet L-BTC swaps too. Worked with both v22 and v23.x.

[jamesdorfman]

Tested ACK 4b86b8a.

Successfully executed a swap between testnet L-BTC and signet BTC, using the patch in ElementsProject/glightning#11 along with elements-23.2.1rc3.

[wtogami]

Is this still stuck due to a CI error?

[delta1]

force pushed to get CI to run. same diff just used --reset-author to update date/time and commit hash

[delta1]

force pushed again after updating the glightning dependency to ElementsProject/glightning@e32b4da