Language: Initialization

[AkhileshNegi]

Is your feature request related to a problem?

As we start using STT, TTS, and other language-specific operations, there's no centralized way to reference supported languages. Each
feature would need to maintain its own language handling, leading to inconsistency and duplication.

Describe the solution you'd like

Create a languages table in a new Global schema:

• Global schema for tables that are not organization/project specific (unlike public schema which has row-level security via
  project/organization)
• Languages table to be referenced by STT, TTS, and other language-dependent features
• Can extend this schema in future for other global resources (e.g., providers table)

Additional context

This separates truly global reference data from tenant-scoped data, keeping the architecture clean as we add more language-dependent
features.