Continue adding opengl font support.

src/core/file_utilities/File.cpp

@@ -113,6 +113,22 @@ std::vector<std::string> File::readLines()
     return content;
 }
 
+std::string File::read()
+{
+    if (!PathExists())
+    {
+        return {};
+    }
+
+    Open(false);
+
+    std::stringstream buffer;
+    buffer << mInHandle->rdbuf();
+
+    Close();
+    return buffer.str();
+}
+
 std::string File::getBaseFilename(const Path& path)
 {
     return path.stem().string();