Added business dashboard

Reviewed-by: tischrei <tino.schreiber@t-systems.com>
Co-authored-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-committed-by: Gode, Sebastian <sebastian.gode@t-systems.com>

otc_metadata/data/documents/bd-umn.yaml

@@ -0,0 +1,6 @@
+---
+link: /business-dashboard/umn/
+rst_location: umn/source
+service_type: bd
+title: User Guide
+type: umn

otc_metadata/data/services/bd.yaml

@@ -0,0 +1,13 @@
+---
+environment: internal
+repositories:
+- environment: internal
+  repo: docs/business-dashboard
+  type: gitea
+service_category: other
+service_title: Business Dashboard
+service_type: bd
+service_uri: business-dashboard
+teams:
+- name: docs-dashboard-rw
+  permission: write