Support for Spring Cloud Bindings

[ThomasVitale]

The Service Binding API is a Kubernetes specification to automatically bind backing services to applications. In the Spring ecosystem, the Spring Cloud Bindings library provides convenient auto-configuration for out-of-the-box bindings to several backing services that Spring Boot supports.

It would be great to add a Cloud Bindings module to the Spring AI project with auto-configuration to automatically bind applications to model providers and vector stores provided by a Kubernetes-based platform. For example, Tanzu Application Platform could benefit from this new module since Service Bindings are used to bind backing services to Tanzu workloads already.

This is an example of a Service Binding Secret for an Ollama integration:

apiVersion: v1
kind: Secret
metadata:
    name: ollama
type: servicebinding.io/ollama
stringData:
    uri: "https:/ollama.llm.svc.cluster.local"

The auto-configuration in the new Cloud Bindings module would convert that information into:

spring.ai.ollama.base-url=https:/ollama.llm.svc.cluster.local

Here's a draft solution for a couple of model providers and vector stores to showcase how the new module would look like: #500. If it's of interest, I'd be happy to continue working on this and introduce support for more model providers and vector stores.