Restructure omni services and add Chatwoot research snapshot

research/chatwoot/swagger/paths/application/custom_attributes/index.yml

@@ -0,0 +1,31 @@
+tags:
+  - Custom Attributes
+operationId: get-account-custom-attribute
+summary: List all custom attributes in an account
+parameters:
+  - name: attribute_model
+    in: query
+    schema:
+      type: string
+      enum: ['0', '1']
+    description: conversation_attribute(0)/contact_attribute(1)
+    required: true
+description: Get details of custom attributes in an Account
+security:
+  - userApiKey: []
+responses:
+  '200':
+    description: Success
+    content:
+      application/json:
+        schema:
+          type: array
+          description: 'Array of all custom attributes'
+          items:
+            $ref: '#/components/schemas/custom_attribute'
+  '403':
+    description: Access denied
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'