chore(docs): Refactor API Reference (#1883)

docs/api/admin/components/schemas/shipping_tax_rate.yaml

@@ -0,0 +1,36 @@
+title: Shipping Tax Rate
+description: >-
+  Associates a tax rate with a shipping option to indicate that the shipping
+  option is taxed in a certain way
+x-resourceId: shipping_tax_rate
+required:
+  - shipping_option_id
+  - rate_id
+properties:
+  shipping_option_id:
+    description: The ID of the Shipping Option
+    type: string
+    example: so_01G1G5V27GYX4QXNARRQCW1N8T
+  shipping_option:
+    description: Available if the relation `shipping_option` is expanded.
+    $ref: ./shipping_option.yaml
+  rate_id:
+    description: The ID of the Tax Rate
+    type: string
+    example: txr_01G8XDBAWKBHHJRKH0AV02KXBR
+  tax_rate:
+    description: Available if the relation `tax_rate` is expanded.
+    $ref: ./tax_rate.yaml
+  created_at:
+    type: string
+    description: The date with timezone at which the resource was created.
+    format: date-time
+  updated_at:
+    type: string
+    description: The date with timezone at which the resource was updated.
+    format: date-time
+  metadata:
+    type: object
+    description: An optional key-value map with additional details
+    example:
+      car: white