NethVoice: Modular Backend Actions and Configuration Refactor

[Amygos]

The NethVoice Settings architecture requires modular backend logic to enable clear separation of components (such as base config, hotel integrations, and advanced modules).

Proposed Solution

• Implement new backend actions to manage NethVoice Hotel-specific settings and transcription service integrations (PR #629).
  • Dedicated handling for hotel alarm lifecycle via systemd timers and service restarts.
  • Integration with external APIs (Deepgram, OpenAI), including key management and satellite service handling.
• Refactor configuration handling and environment variable management
  • Remove legacy and unused configuration attributes, prevent unintended overwrites, and reinforce defaults management.
  • Ensure settings for NETHCTI, Jitsi, branding, reports, and hotel logic are initialized consistently and only when needed.
• Maintain test coverage for new actions and configuration flows.

[Amygos]

Testing release nethesis/ns8-nethvoice 1.5.4-testing.16

[Amygos]

Follow the QA steps of #7790