feat(cat-voices): app config model

[damian-molinski]

Description

This PR simulates dynamic app config which will be loaded from cat-gateway endpoint in future. #1348

Related Issue(s)

Resolves #1350

Related Pull Requests

Must be merged after #1372

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

[github-actions]

❌ Test Report | ${\color{lightgreen}Pass: 353/357}$ | ${\color{red}Fail: 4/357}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 370/370}$ | ${\color{red}Fail: 0/370}$ |