Added small breaking fix to reports for au/nz tax, added budgets endpoints, added the rest of the docs for api sets.. some still dont have body examples but an improvment

Author: SerKnight

docs/v4/accounting/index.html

@@ -2,7 +2,7 @@
  * Xero Assets API
  * The Assets API exposes fixed asset related functions of the Xero Accounting application and can be used for a variety of purposes such as creating assets, retrieving asset valuations etc.
  *
- * The version of the OpenAPI document: 2.12.0
+ * The version of the OpenAPI document: 2.13.2
  * Contact: [email protected]
  *
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).

docs/v4/assets/index.html

@@ -2,7 +2,7 @@
  * Xero Bank Feeds API
  * The Bank Feeds API is a closed API that is only available to financial institutions that have an established financial services partnership with Xero. If you're an existing financial services partner that wants access, contact your local Partner Manager. If you're a financial institution who wants to provide bank feeds to your business customers, contact us to become a financial services partner.
  *
- * The version of the OpenAPI document: 2.12.0
+ * The version of the OpenAPI document: 2.13.2
  * Contact: [email protected]
  *
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).

docs/v4/files/index.html

@@ -2,7 +2,7 @@
  * Xero Files API
  * These endpoints are specific to Xero Files API
  *
- * The version of the OpenAPI document: 2.12.0
+ * The version of the OpenAPI document: 2.13.2
  * Contact: [email protected]
  *
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).