Enable collections/provenance through parent inscriptions method

[raphjaph]

Implementation work on #783, look there for more information.

[veryordinally]

ord wallet inscribe is still broken with this PR:

error: Failed to send reveal transaction
because: JSON-RPC error: RPC error response: RpcError { code: -26, message: "non-mandatory-script-verify-flag (Invalid Schnorr signature)", data: None }

[veryordinally]

After some deep-diving on decoding the partially signed and fully signed reveal TXs when inscribing with a parent, I found that sign_raw_transaction_with_wallet apparently removes our inscription data from the witness data. Need to dig deeper to find out why.

@raphjaph @casey it would be great to catch this in tests, but I wasn't sure how to best fit this kind of test into the testing framework. Happy to discuss.

[ericatallah]

I've been having trouble getting a child inscription to render properly in the explorer. Looks like a few inscription indexes were hard coded to 0. Not sure if there are more though. Here is a minor fix, hope it helps: https://github.com/raphjaph/ord/pull/3

[veryordinally]

Making progress. For anyone watching, this code does NOT meet our usual quality criteria yet, by far - lots of tests missing and some places are just held together by string. Anyone tempted to try this, this code may work, but be aware that using this on live wallets may lead to loss of inscriptions or other unpredictable outcomes.

[raphjaph]

Closing because #1963 is the most up to date