Description

I have been working with wallet and our descriptor type for my work on Psbt and multisig. I noticed that we cannot get the descriptor used to create the wallet directly from the Wallet type. Hence exposing public_descriptor will allow us get this directly. A good use case is if you want to create a watch only wallet you could just call public_descriptor.

At the moment I am returning the descriptor as a string instead of a ExtendedDescriptor. The downside to this is we loose all the functionality ExtendedDescriptor provides. We do not have a ExtendedDescriptor type which is just an alias for Descriptor<DescriptorPublicKey>.

We could create and implement the type if necessary instead of using a string.

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

New Features:

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