[feature] W3ID: Implement Pre-Rotation Key Setup

[sosweetham]

Description

Establish the configuration and handling for pre-rotation keys. This task involves reading the pre-rotation parameters (such as updateKeys and nextKeyHashes) from the application's configuration. The implementation should validate these keys and ensure they’re correctly passed to the rotation process.

Reference

%%{init: {"theme": "default"}}%%
graph LR
    CA[Consumer Application]
    WF[W3ID Factory]
    PRK[Pre-Rotation Key Setup]

    CA -->|Provides rotation config with pre-rotation keys| WF
    WF -->|Extracts updateKeys & nextKeyHashes| PRK

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Acceptance Criteria

Pre-rotation configuration is available and validated.
The W3ID Factory accepts pre-rotation keys (update keys and next key hashes) as part of its setup.
Unit tests verify correct key parsing and error handling for invalid configuration.