Implement a simple function register manager (SysReg)

src/sysreg.cpp

@@ -0,0 +1,18 @@
+#include "../include/sysreg.h"
+
+using namespace VoidFrame;
+
+std::function<void(void)> *
+SysReg::RegisterCallback(const std::string &&name,
+                         std::function<void(void)> &callback) {
+  callbacks[name] =
+      std::make_unique<std::function<void(void)>>(std::move(callback));
+
+  return callbacks[name].get();
+}
+
+const std::function<void(void)> *SysReg::GetCallback(std::string &&name) {
+  return callbacks[name].get();
+}
+
+void SysReg::DeleteCallback(std::string &&name) { callbacks.erase(name); }