Add obs_3rd_party-dotnet-sdk.yaml (#70)

Reviewed-on: #70
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Dmitrii Sabelnikov <Dmitriy.Sabelnikov@t-systems.com>
Co-committed-by: Dmitrii Sabelnikov <Dmitriy.Sabelnikov@t-systems.com>

otc_metadata/data/documents/obs_3rd_party-dotnet-sdk.yaml

@@ -0,0 +1,13 @@
+---
+hc_location: sdk/dotnet-devg-obs
+html_location: docs/obs_3rd_party/dotnet_sdk
+link: /object-storage-service-3rd-party/dotnet-sdk/
+rst_location: doc/dotnet-sdk/source
+service_type: obs_3rd_party
+title: .NET SDK
+type: dotnet-sdk
+cloud_environments:
+  - name: eu_de
+    visibility: public
+    pdf_visibility: public
+    pdf_enabled: false