Feature - Pagination for git tree API (#5838)

* Feature - Pagination for git tree API

* Handles case when page is negative

* Does a for loop over the start and end rather than all entries

* Removed redundent logic

* Adds per_page as a query parameter

* Adds DEFAULT_GIT_TREES_PER_PAGE for settings, ran make fmt

* Fix typo in cheat-sheet en

* Makes page start at 1, generated swagger

* Use updates to SDK

* Updates to use latest sdk

* Updates swagger for tree api

* Adds test for GetTreeBySHA

* Updates per PR reviews

* Updates per PR reviews

* Remove file

* Formatting

* Fix to swagger file

* Fix to swagger

* Update v1_json.tmpl

* Fix to swagger file

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -332,6 +332,7 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
 - `ENABLE_SWAGGER`: **true**: Enables /api/swagger, /api/v1/swagger etc. endpoints. True or false; default is true.
 - `MAX_RESPONSE_ITEMS`: **50**: Max number of items in a page.
 - `DEFAULT_PAGING_NUM`: **30**: Default paging number of api.
+- `DEFAULT_GIT_TREES_PER_PAGE`: **1000**: Default and maximum number of items per page for git trees api.
 
 ## i18n (`i18n`)
 

docs/content/doc/advanced/config-cheat-sheet.zh-cn.md

@@ -199,6 +199,7 @@ menu:
 - `ENABLE_SWAGGER`: **true**: 是否启用swagger路由 /api/swagger, /api/v1/swagger etc. endpoints. True 或 false; 默认是  true.
 - `MAX_RESPONSE_ITEMS`: **50**: 一个页面最大的项目数。
 - `DEFAULT_PAGING_NUM`: **30**: API中默认分页条数。
+- `DEFAULT_GIT_TREES_PER_PAGE`: **1000**: GIT TREES API每页的默认和最大项数.
 
 ## Markup (`markup`)