cache: Add dummy NoCache class

cache/nocache.h

@@ -0,0 +1,30 @@
+#include "icache.h"
+
+class NoCache : public ICache
+{
+public:
+	NoCache(std::string p)
+	{
+
+	}
+	virtual std::optional<std::string> get(std::string_view key) const
+	{
+		return {};
+	}
+	virtual void put(std::string_view key, std::string val)
+	{
+		return;
+	}
+	virtual void remove(std::string_view key)
+	{
+		return;
+	}
+	virtual void removePrefix(std::string_view prefix)
+	{
+		return;
+	}
+	virtual void clear()
+	{
+		return;
+	}
+};