the big refactor + extracted data classes from coders/json to data/dynamic

src/content/Content.h

@@ -92,14 +92,18 @@ public:
 class Content {
     std::unordered_map<std::string, Block*> blockDefs;
     std::unordered_map<std::string, ItemDef*> itemDefs;
+    std::unique_ptr<ContentIndices> indices;
 public:
-    ContentIndices* const indices;
     DrawGroups* const drawGroups;
 
     Content(ContentIndices* indices, DrawGroups* drawGroups,
             std::unordered_map<std::string, Block*> blockDefs,
             std::unordered_map<std::string, ItemDef*> itemDefs);
     ~Content();
+
+    inline ContentIndices* getIndices() const {
+        return indices.get();
+    }
     
     Block* findBlock(std::string id) const;
     Block* requireBlock(std::string id) const;