Add support for maxfeerate and maxburnamount to sendrawtransaction

[casey]

This needs a test.

[casey]

I'm giving up on this. We can't test this PR because the integration tests use an older version of bitcoind which doesn't support maxburnamount. We can't upgrade bitcoind because tests start failing: descriptor wallets are created by default, which breaks commands which rely on descriptor wallets (fixable), and fee rate estimation tests also fail (not sure if we can fix).

This is all too much of a pain in the ass to justify not just trying to work around these issues in ord, instead of trying to do things the "right" way and doing it here.