feat: add state management, routing

[minikin]

Description

Add foundational implementation of state management and routes.

🚨🚨🚨 Note for the reviewer:
These are the fundamental implementations of state management, repositories, services, and other classes.
You can think about it as guidance for Catalyst Voices Frontend App Architecture. As soon as the data and user flows are defined, the recent implementation will be replaced with concrete implementations.

Related Issue(s)

Closes #76, #77

Description of Changes

Add foundational implementation of state management and routes.

Breaking Changes

None

Screenshots

Not applicable

Related Pull Requests

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[stevenj]

LGTM