addding openapi for AS

Reviewed-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-authored-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-committed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>

.spectral.yaml

@@ -0,0 +1,11 @@
+rules:
+  path-starts-with-slash-no-spaces:
+    description: Path must start with / and contain no spaces
+    message: "Path '{{property}}' must start with '/' and must not contain spaces"
+    severity: error
+    given: $.paths
+    then:
+      field: "@key"
+      function: pattern
+      functionOptions:
+        match: "^\\/[^\\s]*$"

.yamllint

@@ -0,0 +1,17 @@
+# .yamllint
+extends: default
+
+yaml-files:
+  - '*.yaml'
+  - '*.yml'
+
+rules:
+  line-length:
+    max: 120
+    level: warning
+  indentation:
+    spaces: 2        # number of spaces per indent level
+    indent-sequences: consistent  # or true/false/whatever
+    level: error
+  document-start:
+    level: warning