docs: provider and distro codegen migration (#3531)

# What does this PR do?

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- Updates provider and distro codegen to handle the new format
- Migrates provider and distro files to the new format

## Test Plan

- Manual testing

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docs/docs/providers/eval/remote_nvidia.mdx

@@ -0,0 +1,23 @@
+---
+description: "NVIDIA's evaluation provider for running evaluation tasks on NVIDIA's platform."
+sidebar_label: Remote - Nvidia
+title: remote::nvidia
+---
+
+# remote::nvidia
+
+## Description
+
+NVIDIA's evaluation provider for running evaluation tasks on NVIDIA's platform.
+
+## Configuration
+
+| Field | Type | Required | Default | Description |
+|-------|------|----------|---------|-------------|
+| `evaluator_url` | `<class 'str'>` | No | http://0.0.0.0:7331 | The url for accessing the evaluator service |
+
+## Sample Configuration
+
+```yaml
+evaluator_url: ${env.NVIDIA_EVALUATOR_URL:=http://localhost:7331}
+```