Anchor commitments 2024

[ecdsa]

this was rebased in july 2024 from #7509 I guess it needs to be rebased again :-)

Here are my personal notes regarding this rebase:

• some tests are broken (REDEEMED state reached too early in test_breach)
• we should use password in memory (daemon unlock command)
• if no password in memory (non-android GUI): maybe warn user?
• stop LN support for watching-only and hardware wallets