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/CDRailActivatorComponent.cpp

@@ -3,6 +3,7 @@
 
 void CDRailActivatorComponentTable::LoadValuesFromDatabase() {
 	auto tableData = CDClientDatabase::ExecuteQuery("SELECT * FROM RailActivatorComponent;");
+	auto& entries = GetEntriesMutable();
 	while (!tableData.eof()) {
 		CDRailActivatorComponent entry;
 
@@ -36,7 +37,7 @@ void CDRailActivatorComponentTable::LoadValuesFromDatabase() {
 
 		entry.showNameBillboard = tableData.getIntField("ShowNameBillboard", 0);
 
-		m_Entries.push_back(entry);
+		entries.push_back(entry);
 		tableData.nextRow();
 	}
 
@@ -44,7 +45,7 @@ void CDRailActivatorComponentTable::LoadValuesFromDatabase() {
 }
 
 CDRailActivatorComponent CDRailActivatorComponentTable::GetEntryByID(int32_t id) const {
-	for (const auto& entry : m_Entries) {
+	for (const auto& entry : GetEntries()) {
 		if (entry.id == id)
 			return entry;
 	}
@@ -52,10 +53,6 @@ CDRailActivatorComponent CDRailActivatorComponentTable::GetEntryByID(int32_t id)
 	return {};
 }
 
-const std::vector<CDRailActivatorComponent>& CDRailActivatorComponentTable::GetEntries() const {
-	return m_Entries;
-}
-
 std::pair<uint32_t, std::u16string> CDRailActivatorComponentTable::EffectPairFromString(std::string& str) {
 	const auto split = GeneralUtils::SplitString(str, ':');
 	if (split.size() == 2) {