chore: Move database storage containers to be translation unit local to allow for safe references (#1434)

* Move CDClientManager to be a namespace

Tested that worlds still load data as expected.  Had no use being a singleton anyways.

* Move cdclient data storage to tu local containers

Allows some data from these containers to be saved on object by reference instead of always needing to copy.

iteration 2

- move all unnamed namespace containers to a singular spot
- use macro for template specialization and variable declaration
- use templates to allow for as little copy paste of types and functions as possible

* remember to use typename!

compiler believes T::StorageType is accessing a member, not a type.

* Update CDClientManager.cpp

* move to cpp?

dDatabase/CDClientDatabase/CDClientTables/CDFeatureGatingTable.h

@@ -17,10 +17,7 @@ struct CDFeatureGating {
 	}
 };
 
-class CDFeatureGatingTable : public CDTable<CDFeatureGatingTable> {
-private:
-	std::vector<CDFeatureGating> entries;
-
+class CDFeatureGatingTable : public CDTable<CDFeatureGatingTable, std::vector<CDFeatureGating>> {
 public:
 	void LoadValuesFromDatabase();
 
@@ -28,6 +25,4 @@ public:
 	std::vector<CDFeatureGating> Query(std::function<bool(CDFeatureGating)> predicate);
 
 	bool FeatureUnlocked(const CDFeatureGating& feature) const;
-
-	const std::vector<CDFeatureGating>& GetEntries(void) const;
 };