Added fileCommon, added freebie font, start listening to SDL Keyboard text input

Common/fileCommon.h

@@ -0,0 +1,14 @@
+#include <filesystem>
+#include <fstream>
+#include "json.hpp"
+
+namespace fs = std::filesystem;
+
+static std::fstream stream;
+
+extern bool OpenFile(fs::path path);
+extern nlohmann::json GetData();
+/// Note we have a specific function for json for pretty printing purpose
+bool SaveJsonFile(fs::path path, nlohmann::json j);
+// bool SaveFile(fs::path path, void *dataToSave); // Leaving it commented out until later
+inline void CloseFileStream() { stream.close(); }