feat: Add descriptor miniscript constructor method

[ItoroD]

Description

This is the third part of #973. Here I am adding in all the methods that accept Miniscript as parameter. The last batch to be added will be new_sh_with_wpkh, new_sh_with_wsh, and new_tr I am testing these ones out and trying to find best why to implement them in a follow up PR.

Notes to the reviewers

These method implementions are not much different from what we have in #973. The main difference is how we parse the string param. In #973 we do BdkDescriptorPublicKey::from_str(pk) as the param expects a publickey. In this PR we do BDKMiniscript::from_str(&mini_script) as the params we expect is miniscript.

Documentation

• bdk_wallet

• bitcoin

• uniffi

• Other:

• new_sh - https://docs.rs/miniscript/12.3.5/miniscript/descriptor/enum.Descriptor.html#method.new_sh

• new_wsh - https://docs.rs/miniscript/12.3.5/miniscript/descriptor/enum.Descriptor.html#method.new_wsh

• new_sh_wsh - https://docs.rs/miniscript/12.3.5/miniscript/descriptor/enum.Descriptor.html#method.new_sh_wsh

• new_bare - https://docs.rs/miniscript/12.3.5/miniscript/descriptor/enum.Descriptor.html#method.new_bare

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing
• I've added a changelog in the next release tracking issue (see example)
• I've linked the relevant upstream docs or specs above

New Features:

• I've added tests for the new feature
• I've added docs for the new feature

[reez]

ACK d8f13b2

I'd squash the changelog commit into the other commit though

[thunderbiscuit]

I started reviewing this this morning and you just sent me down a rabbit hole of looking at old scripts and ways to quickly try new APIs... 🤣 in the end I did that all day and didn't finish the review. I promise you're on my list for tomorrow!