Add cache proof of concept

[sclaiborne]

No description provided.

[sclaiborne]

Suggested change

	struct cacheItem_typ {
	std::string variable;
	std::string alias;
	std::string value;
	VAR_TYPE_enum type;
	void* address = 0; // This needs to be initialized to 0
	size_t length;
	size_t dimension;
	cacheTime lastAccessed; // TODO: Maybe make it something other than a udint
	std::vector<varTools::cacheSubscribe_typ> subscribers; // This may end up being a vector of pointers of cacheSubLink_typ
	std::vector<varTools::cacheAuth_typ> authorization;
	};
	struct cacheItem_typ {
	std::string variable;
	std::string alias;
	std::string value;
	VAR_TYPE_enum type;
	void* address = 0; // This needs to be initialized to 0
	size_t length;
	size_t dimension;
	cacheTime lastAccessed; // TODO: Maybe make it something other than a udint
	std::vector<varTools::cacheSubscribe_typ> subscribers; // This may end up being a vector of pointers of cacheSubLink_typ
	std::vector<varTools::cacheAuth_typ> authorization;
	std::vector<UDINT> children;
	};

Maybe check out link list or trees