feat(eosIO): added EosIO class to handle arbitrary eos data

EosIO class wraps all eos tables (like helm) so that they can be used in a more standard fashion

src/eos/public/eosIO.h

@@ -0,0 +1,34 @@
+#ifndef EOSIO_H
+#define EOSIO_H
+
+#include <string>
+#include <variant>
+#include <memory>
+
+// EOS table format includes
+#include "helm.h"
+
+using EOSTable = std::variant<
+                 std::unique_ptr<helmholtz::HELMTable>
+                 >;
+
+class EosIO {
+private:
+    std::string m_filename;
+    bool m_loaded = false;
+    std::string m_format;
+    EOSTable m_table;
+    void load();
+
+    // Loaders for each format, right now just HELM
+    void loadHelm();
+public:
+    EosIO(const std::string filename);
+    ~EosIO() = default;
+
+    std::string getFormat() const;
+
+    EOSTable& getTable();
+};
+
+#endif // EOSIO_H