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

Common/fileCommon.cpp

@@ -0,0 +1,44 @@
+#include "fileCommon.h"
+#include "json.hpp"
+
+
+bool OpenFile(fs::path path) {
+    path = fs::absolute(path);
+
+    if (!fs::exists(path)) {
+        printf("File Read error! Could not find file at: \n");
+        printf("%s\n", path.c_str());
+        return false;
+    }
+
+    stream.open(absolute(path));
+    if (!stream) {
+        printf("Error opening stream \n");
+        return false;
+    }
+
+    return true;
+}
+
+
+nlohmann::json GetData() {
+    if (!stream) {
+        printf("Open the file first! \n");
+        return nlohmann::json();
+    }
+
+    return nlohmann::json::parse(stream);
+}
+
+bool SaveJsonFile(fs::path path, nlohmann::json j) {
+
+    if (stream) {
+        printf("Stream open for reading! Please close stream before saving \n");
+        return false;
+    }
+
+    stream.open(absolute(path), std::fstream::in | std::fstream::out | std::fstream::app);
+    stream << std::setw(4) << j << std::endl;
+
+    stream.close();
+}