feat: split metadata into smal pieces

Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: gtema <artem.goncharov@gmail.com>
Co-committed-by: gtema <artem.goncharov@gmail.com>

otc_metadata/data/services/rds.yaml

@@ -0,0 +1,16 @@
+---
+environment: public
+repositories:
+- environment: internal
+  repo: docs-swiss/relational-database-service
+  type: gitea
+- environment: public
+  repo: opentelekomcloud-docs-swiss/relational-database-service
+  type: github
+service_category: database
+service_title: Relational Database Service
+service_type: rds
+service_uri: relational-database-service
+teams:
+- name: docs-database-rw
+  permission: write