feat: Expose miniscript has_wildcard and sanity_check

[ItoroD]

Description

Adding these based off of #687

Notes to the reviewers

Documentation

• https://docs.rs/miniscript/latest/miniscript/descriptor/enum.Descriptor.html#method.has_wildcard

• https://docs.rs/miniscript/latest/miniscript/descriptor/enum.Descriptor.html#method.sanity_check

• bdk_wallet

• bitcoin

• uniffi

• Other:

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

[ItoroD]

I think the sanity method check is great! I wonder what other kinds of things it could catch.