Add LTS service

Reviewed-by: Hasko, Vladimir <vladimir.hasko@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/services/lts.yaml

@@ -0,0 +1,16 @@
+---
+environment: internal
+repositories:
+- environment: internal
+  repo: docs-swiss/log-tank-service
+  type: gitea
+- environment: public
+  repo: opentelekomcloud-docs-swiss/log-tank-service
+  type: github
+service_category: md
+service_title: Log Tank Service
+service_type: lts
+service_uri: log-tank-service
+teams:
+- name: docs-orchestration-rw
+  permission: write