added support for parsing hash on vector elements (#4502)

* added support for parsing hash on vector elements

reversed check for scalar to check for vector

added C++ generation of cpp_type vectors

removed ctor call for vector fields
added condition !vector for cpp_type check

added Pack() and UnPack() code generation for vector of hashes

* schema change:
added table Referrable and weak references towards it from Monster

added single_weak_reference to Monster table
changed order with vector_of_weak_references

* re-generated monster schema dependent code

added Referrable.cs to FlatBuffers.Test.csproj

tests/monster_test.schema.json

@@ -89,6 +89,13 @@
       },
       "additionalProperties" : false
     },
+    "MyGame_Example_Referrable" : {
+      "type" : "object",
+      "properties" : {
+        "id" : { "type" : "number" }
+      },
+      "additionalProperties" : false
+    },
     "MyGame_Example_Monster" : {
       "type" : "object",
       "description" : " an example documentation comment: monster object",
@@ -127,7 +134,10 @@
         "test5" : { "type" : "array", "items" : { "$ref" : "#/definitions/MyGame_Example_Test" } },
         "vector_of_longs" : { "type" : "array", "items" : { "type" : "number" } },
         "vector_of_doubles" : { "type" : "array", "items" : { "type" : "number" } },
-        "parent_namespace_test" : { "$ref" : "#/definitions/MyGame_InParentNamespace" }
+        "parent_namespace_test" : { "$ref" : "#/definitions/MyGame_InParentNamespace" },
+        "vector_of_referrables" : { "type" : "array", "items" : { "$ref" : "#/definitions/MyGame_Example_Referrable" } },
+        "single_weak_reference" : { "type" : "number" },
+        "vector_of_weak_references" : { "type" : "array", "items" : { "type" : "number" } }
       },
       "required" : ["name"],
       "additionalProperties" : false