Spring AI Match OPENAI_BASE_URL with OpenAI

Expected Behavior

I would like Spring's OPENAI_BASE_URL related parameters to end with /v1, possibly for migration ease, check to see if it already ends in v1 first.

Current Behavior

Right now, the settings named similar to OPENAI_BASE_URL are different than canonical openai clients, such as the python client, as they are not rooted at v1.

Context

This creates problems for those mixing between different client libraries, as in spring ai, you can't have /v1 whereas all the others must have /v1

Here's one example of openai, but almost all libraries follow this also. https://github.com/openai/openai-python/blob/dfc4cfabfab3db89c0668c9bfd5f3f6f49093935/README.md?plain=1#L712