Restructure omni services and add Chatwoot research snapshot

research/chatwoot/swagger/definitions/error/bad_request.yml

@@ -0,0 +1,9 @@
+title: data
+type: object
+properties:
+  description:
+    type: string
+  errors:
+    type: array
+    items:
+      $ref: '#/components/schemas/request_error'

research/chatwoot/swagger/definitions/error/request.yml

@@ -0,0 +1,8 @@
+type: object
+properties:
+  field:
+    type: string
+  message:
+    type: string
+  code:
+    type: string