[http-client-csharp] add regen preview local validation script

.gitignore

@@ -217,6 +217,7 @@ packages/*/etc/
 # csharp emitter
 !packages/http-client-csharp/package-lock.json
 packages/http-client-csharp/generator/artifacts/
+packages/http-client-csharp/debug/
 packages/http-client-csharp/generated-defs/**/*.js
 packages/http-client-csharp/generated-defs/**/*.js.map
 packages/http-client-csharp/generated-defs/**/*.d.ts

cspell.yaml

@@ -6,6 +6,8 @@ dictionaries:
   - typescript
 words:
   - Adoptium
+  - Arize
+  - arizeaiobservabilityeval
   - agentic
   - aiohttp
   - alzimmer
@@ -156,11 +158,13 @@ words:
   - myname
   - mypy
   - nanos
+  - ncpu
   - nexted
   - nihao
   - nint
   - NODEFS
   - noformat
+  - nologo
   - noopener
   - noreferrer
   - nosec

packages/http-client-csharp/CONTRIBUTING.md

@@ -176,11 +176,21 @@ Generate test projects to validate the emitter and generator:
 
 To regenerate test projects after making changes:
 
-1. **Generate projects**:
+**Generate projects**:
 
-   ```bash
-   ./eng/scripts/Generate.ps1
-   ```
+```bash
+./eng/scripts/Generate.ps1
+```
+
+### Regenerating Azure Libraries
+
+To regenerate azure libraries using your local changes, run:
+
+```bash
+   ./eng/scripts/RegenPreview.ps1 <path-to-clone-of-azure-sdk-for-net>
+```
+
+This will regenerate all the Azure libraries and allow you to view any potential diffs your changes may cause. For more information on the script's usage, see [RegenPreview](./eng/scripts/docs/RegenPreview.md).
 
 ## Creating Pull Requests