[Task] Implement experimental gRPC binding

[eike-hass]

Description

Implement an experimental gRPC service to consume selected functions from the library.

Motivation

Allow arbitrary host languages to consume the library through a gRPC interface.

Resources

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To-do list

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Change checklist

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• 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.

Tasks

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1. Implement Domain Linkage #1323
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2. Create DIDs #1328
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3. Add verification for VC 1.1 Credentials #1329
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4. Investigate parsing failure #1330
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5. Publish to DockerHub #1331
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6. Implement StatusList 2021 creation, update and verification #1335
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