Support Declarative configuration

[thompson-tomo]

In early 2026 Declarative configuration initial stable version was released and as such we should be looking to add support for it.

This is more than just reading just config from a file but a new approach to managing the configuration layer which is designed to be changing over time.

The support status is documented at https://github.com/open-telemetry/opentelemetry-configuration/blob/main/language-support-status.md

The steps I foresee:

• generate types based on json schema
• config loader using types
• use types in providers
• add a diff engine to determine what has changed
• reload only affected components

[github-actions]

👋 This issue has been marked as stale because it has been open with no activity. You can: comment on the issue or remove the stale label to hold stale off for a while, add the keep label to hold stale off permanently, or do nothing. If you do nothing this issue will be closed eventually by the stale bot.