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

templates/swagger/v1_json.tmpl

@@ -1775,6 +1775,24 @@
             "name": "sha",
             "in": "path",
             "required": true
+          },
+          {
+            "type": "boolean",
+            "description": "show all directories and files",
+            "name": "recursive",
+            "in": "query"
+          },
+          {
+            "type": "integer",
+            "description": "page number; the 'truncated' field in the response will be true if there are still more items after this page, false if the last page",
+            "name": "page",
+            "in": "query"
+          },
+          {
+            "type": "integer",
+            "description": "number of items per page; default is 1000 or what is set in app.ini as DEFAULT_GIT_TREES_PER_PAGE",
+            "name": "per_page",
+            "in": "query"
           }
         ],
         "responses": {
@@ -7352,10 +7370,20 @@
       "description": "GitTreeResponse returns a git tree",
       "type": "object",
       "properties": {
+        "page": {
+          "type": "integer",
+          "format": "int64",
+          "x-go-name": "Page"
+        },
         "sha": {
           "type": "string",
           "x-go-name": "SHA"
         },
+        "total_count": {
+          "type": "integer",
+          "format": "int64",
+          "x-go-name": "TotalCount"
+        },
         "tree": {
           "type": "array",
           "items": {