docs: part 1 - fix warnings in documentation generation (#2861)

**Description**
This PR removes some of the warnings when uv builds the docs
- Errors appear when generating docs about .md files not appearing in
toctree. ~~Adding content to the `providers-gen.py ` file that adds `---
orphan: true ---` to to each file.~~. Added a toctree generator to the
`providers-gen.py` file, this gets rid of the errors in the builds.
- Deletes the `_openai_compat` files, extension of PR #2849
- Adds the `files` APIs section to the `providers` toctree on the index
page
- Manually adds the `--- orphan: true ---` to the advanced apis. Ill try
to find a way to modify the providers code gen so it automatically adds
it, but this fixes the errors.
- Adds the `testing.md` to the `contributing` toctree
- Adds `starting_llama_stack_server.md` to `distributions` toctree

There are some other warnings im still looking at but this PR gets rid
of most of the toctree errors
Theres also an issue with the actual distribution-codegen that I can
investigate in another PR. Opened a bug for it here #2873

docs/source/providers/inference/index.md

@@ -1,26 +1,34 @@
-# Inference Providers
+# Inference 
+
+## Overview
 
 This section contains documentation for all available providers for the **inference** API.
 
-- [inline::meta-reference](inline_meta-reference.md)
-- [inline::sentence-transformers](inline_sentence-transformers.md)
-- [remote::anthropic](remote_anthropic.md)
-- [remote::bedrock](remote_bedrock.md)
-- [remote::cerebras](remote_cerebras.md)
-- [remote::databricks](remote_databricks.md)
-- [remote::fireworks](remote_fireworks.md)
-- [remote::gemini](remote_gemini.md)
-- [remote::groq](remote_groq.md)
-- [remote::hf::endpoint](remote_hf_endpoint.md)
-- [remote::hf::serverless](remote_hf_serverless.md)
-- [remote::llama-openai-compat](remote_llama-openai-compat.md)
-- [remote::nvidia](remote_nvidia.md)
-- [remote::ollama](remote_ollama.md)
-- [remote::openai](remote_openai.md)
-- [remote::passthrough](remote_passthrough.md)
-- [remote::runpod](remote_runpod.md)
-- [remote::sambanova](remote_sambanova.md)
-- [remote::tgi](remote_tgi.md)
-- [remote::together](remote_together.md)
-- [remote::vllm](remote_vllm.md)
-- [remote::watsonx](remote_watsonx.md)
+## Providers
+
+```{toctree}
+:maxdepth: 1
+
+inline_meta-reference
+inline_sentence-transformers
+remote_anthropic
+remote_bedrock
+remote_cerebras
+remote_databricks
+remote_fireworks
+remote_gemini
+remote_groq
+remote_hf_endpoint
+remote_hf_serverless
+remote_llama-openai-compat
+remote_nvidia
+remote_ollama
+remote_openai
+remote_passthrough
+remote_runpod
+remote_sambanova
+remote_tgi
+remote_together
+remote_vllm
+remote_watsonx
+```

docs/source/providers/inference/remote_cerebras-openai-compat.md

@@ -1,21 +0,0 @@
-# remote::cerebras-openai-compat
-
-## Description
-
-Cerebras OpenAI-compatible provider for using Cerebras models with OpenAI API format.
-
-## Configuration
-
-| Field | Type | Required | Default | Description |
-|-------|------|----------|---------|-------------|
-| `api_key` | `str \| None` | No |  | The Cerebras API key |
-| `openai_compat_api_base` | `<class 'str'>` | No | https://api.cerebras.ai/v1 | The URL for the Cerebras API server |
-
-## Sample Configuration
-
-```yaml
-openai_compat_api_base: https://api.cerebras.ai/v1
-api_key: ${env.CEREBRAS_API_KEY}
-
-```
-

docs/source/providers/inference/remote_fireworks-openai-compat.md

@@ -1,21 +0,0 @@
-# remote::fireworks-openai-compat
-
-## Description
-
-Fireworks AI OpenAI-compatible provider for using Fireworks models with OpenAI API format.
-
-## Configuration
-
-| Field | Type | Required | Default | Description |
-|-------|------|----------|---------|-------------|
-| `api_key` | `str \| None` | No |  | The Fireworks API key |
-| `openai_compat_api_base` | `<class 'str'>` | No | https://api.fireworks.ai/inference/v1 | The URL for the Fireworks API server |
-
-## Sample Configuration
-
-```yaml
-openai_compat_api_base: https://api.fireworks.ai/inference/v1
-api_key: ${env.FIREWORKS_API_KEY}
-
-```
-

docs/source/providers/inference/remote_groq-openai-compat.md

@@ -1,21 +0,0 @@
-# remote::groq-openai-compat
-
-## Description
-
-Groq OpenAI-compatible provider for using Groq models with OpenAI API format.
-
-## Configuration
-
-| Field | Type | Required | Default | Description |
-|-------|------|----------|---------|-------------|
-| `api_key` | `str \| None` | No |  | The Groq API key |
-| `openai_compat_api_base` | `<class 'str'>` | No | https://api.groq.com/openai/v1 | The URL for the Groq API server |
-
-## Sample Configuration
-
-```yaml
-openai_compat_api_base: https://api.groq.com/openai/v1
-api_key: ${env.GROQ_API_KEY}
-
-```
-

docs/source/providers/inference/remote_together-openai-compat.md

@@ -1,21 +0,0 @@
-# remote::together-openai-compat
-
-## Description
-
-Together AI OpenAI-compatible provider for using Together models with OpenAI API format.
-
-## Configuration
-
-| Field | Type | Required | Default | Description |
-|-------|------|----------|---------|-------------|
-| `api_key` | `str \| None` | No |  | The Together API key |
-| `openai_compat_api_base` | `<class 'str'>` | No | https://api.together.xyz/v1 | The URL for the Together API server |
-
-## Sample Configuration
-
-```yaml
-openai_compat_api_base: https://api.together.xyz/v1
-api_key: ${env.TOGETHER_API_KEY}
-
-```
-