Adding support for wildcard models in the model_providers config (#696)

* cleaning up plano cli commands

* adding support for wildcard model providers

* fixing compile errors

* fixing bugs related to default model provider, provider hint and duplicates in the model provider list

* fixed cargo fmt issues

* updating tests to always include the model id

* using default for the prompt_gateway path

* fixed the model name, as gpt-5-mini-2025-08-07 wasn't in the config

* making sure that all aliases and models match the config

* fixed the config generator to allow for base_url providers LLMs to include wildcard models

* re-ran the models list utility and added a shell script to run it

* updating docs to mention wildcard model providers

* updated provider_models.json to yaml, added that file to our docs for reference

* updating the build docs to use the new root-based build

---------

Co-authored-by: Salman Paracha <salmanparacha@MacBook-Pro-342.local>

config/README.md

@@ -18,7 +18,7 @@ $ cargo test
 ```
 
 ## Local development
-- Build docker image for arch gateway. Note this needs to be built once.
+- Build docker image for Plano. Note this needs to be built once.
   ```
   $ sh build_filter_image.sh
   ```
@@ -27,9 +27,9 @@ $ cargo test
   ```
   $ cargo build --target wasm32-wasip1 --release
   ```
-- Start envoy with arch_config.yaml and test,
+- Start envoy with config.yaml and test,
   ```
-  $ docker compose -f docker-compose.dev.yaml up archgw
+  $ docker compose -f docker-compose.dev.yaml up plano
   ```
 - dev version of docker-compose file uses following files that are mounted inside the container. That means no docker rebuild is needed if any of these files change. Just restart the container and chagne will be picked up,
   - envoy.template.yaml