Added backstage folder

backstage/all-apis.yaml

@@ -0,0 +1,8 @@
+apiVersion: backstage.io/v1alpha1
+kind: Location
+metadata:
+  name: AthenaAPIs
+  description: A collection of Athena APIs
+spec:
+  targets:
+    - ../api/example.yaml

backstage/all-components.yaml

@@ -0,0 +1,13 @@
+# https://backstage.io/docs/features/software-catalog/descriptor-format#kind-component
+apiVersion: backstage.io/v1alpha1
+kind: Component
+metadata:
+  name: Athena
+  annotations:
+    backstage.io/techdocs-ref: dir:..
+spec:
+  type: documentation
+  lifecycle: production
+  owner: guests
+  system: examples
+  providesApis: []

backstage/all-systems.yaml

@@ -0,0 +1,7 @@
+# https://backstage.io/docs/features/software-catalog/descriptor-format#kind-system
+apiVersion: backstage.io/v1alpha1
+kind: System
+metadata:
+  name: examples
+spec:
+  owner: guests

backstage/main.yaml

@@ -0,0 +1,12 @@
+apiVersion: backstage.io/v1alpha1
+kind: Location
+metadata:
+  name: example-all
+  description: A collection of all Backstage example entities, except users, groups, and templates
+spec:
+  targets:
+    - ./all-apis.yaml
+    - ./all-components.yaml
+    - ./all-domains.yaml
+    - ./all-resources.yaml
+    - ./all-systems.yaml