[TS] Fix generation of struct members in object api (#7148)

* Fix C/C++ Create<Type>Direct with sorted vectors

If a struct has a key the vector has to be sorted. To sort the vector
you can't use "const".

* Changes due to code review

* Improve code readability

* Add generate of JSON schema to string to lib

* option indent_step is supported

* Remove unused variables

* Fix break in test

* Fix style to be consistent with rest of the code

* [TS] Fix reserved words as arguments (#6955)

* [TS] Fix generation of reserved words in object api (#7106)

* [TS] Fix generation of object api

* [TS] Fix MakeCamel -> ConvertCase

* [TS] Add test for struct of struct of struct

* Update generated files

* Add missing files

* [TS] Fix query of null/undefined fields in object api

tests/monster_test.schema.json

@@ -140,6 +140,15 @@
       },
       "additionalProperties" : false
     },
+    "MyGame_Example_StructOfStructsOfStructs" : {
+      "type" : "object",
+      "properties" : {
+        "a" : {
+                "$ref" : "#/definitions/MyGame_Example_StructOfStructs"
+              }
+      },
+      "additionalProperties" : false
+    },
     "MyGame_Example_Stat" : {
       "type" : "object",
       "properties" : {