WASM32 - Re-enable resolver in WASM build

[wulfraem]

Description

For the latest WASM architecture redesign, the identity_resolver crate had to be disabled.

Motivation

The crate has to be re-added to allow resolving DIDs as before.

Resources

• commit where resolver has been disabled
• pull request where this change has been merged

Change checklist

Add an x to the boxes that are relevant to your changes, and delete any items that are not.

• The feature or fix is implemented in Rust and across all bindings whereas possible.
• The feature or fix has sufficient testing coverage
• All tests and examples build and run locally as expected
• Every piece of code has been document according to the documentation guidelines.
• If conceptual documentation (mdbook) and examples highlighting the feature exist, they are properly updated.
• If the feature is not currently documented, a documentation task Issue has been opened to address this.