Test collector using openai-generic client (groq) (#1813)

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> [!IMPORTANT]
> Add `TestGroq` function and related tests for Groq client integration
with OpenAI-generic provider.
> 
>   - **Behavior**:
> - Adds `TestGroq` function in `groq.baml` for testing Groq client with
OpenAI-generic provider.
> - Updates `client.go` and `async_client.py` to include `TestGroq`
function for synchronous and asynchronous calls.
>     - Adds `TestGroq` endpoint to `openapi.yaml` for API interaction.
>   - **Testing**:
> - Adds `test_collector_groq()` in `test_collector.py` to validate Groq
client functionality.
>   - **Misc**:
>     - Updates `http-server.py` to handle Groq client responses.
>     - Modifies `uv.lock` to update dependencies.
> 
> <sup>This description was created by </sup>[<img alt="Ellipsis"
src="https://img.shields.io/badge/Ellipsis-blue?color=175173">](https://www.ellipsis.dev?ref=BoundaryML%2Fbaml&utm_source=github&utm_medium=referral)<sup>
for 139e70f. It will automatically
update as commits are pushed.</sup>

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Author: aaronvg

integ-tests/baml_src/test-files/providers/groq.baml

@@ -0,0 +1,16 @@
+client<llm> Groq {
+  provider openai-generic
+  options {
+    api_key env.GROQ_API_KEY
+    model "llama-3.3-70b-versatile"
+    base_url "https://api.groq.com/openai/v1"
+  }
+}
+
+function TestGroq(input: string) -> string {
+  client Groq
+  prompt #"
+    {{ _.role('user') }}
+    {{ input }}
+  "#
+}