Consider removal of deprecated elements as compatible

I'm using openapi-diff quite successfully to avoid accidental changes in the API (and therefore introducing a breaking change). We use it as a part of our pipeline.

The current struggle is: that sometimes one wants to introduce a breaking change (like the removal of obsolete API).
My initial idea would float around a two-step process:

• marking an element ad deprecated (keeping compatibility)
• removing the deprecated element

To do that, when processing the list of ChangedOpenApi#getChangedElements I'd need to know if the particular element is deprecatable and decide if the change is incompatible or not.

That looks to me like another SPI but I'm not sure if it's the direction. I know it's currently not possible and I'm not even sure if the direction of my thought even makes sense.

Comience examinando ChangedOpenApi#getChangedElements y cómo openapi-diff clasifica actualmente las eliminaciones como incompatibles. Revise los puntos de extensión existentes y la idea de SPI propuesta en el issue antes de decidirse por un enfoque. Done debería proporcionar una forma clara de tratar la eliminación de elementos obsoletos como compatible, preservando al mismo tiempo las comprobaciones existentes de breaking changes.