Enable easier deving of the in progress manifests

the local dev server now hosts the static files
rather than needing to point to github.
This means we can see updated before needing to push
them for now

data/README.md

+# Backstage data
+
+Example: https://github.com/backstage/backstage/tree/master/packages/catalog-model/examples
+

data/all.yaml

+apiVersion: backstage.io/v1alpha1
+kind: Location
+metadata:
+  name: all
+  description: Location of all git controlled resources
+spec:
+  targets:
+    - ./../catalog-info.yaml
+    - ./acme.yaml
+    - ./all-apis.yaml
+    - ./all-components.yaml
+    - ./all-domains.yaml
+    - ./all-resources.yaml
+    - ./all-systems.yaml
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