build: Fix building with GCC 13

src/control.cpp

@@ -1,3 +1,4 @@
+#include <cstdint>
 #include <assert.h>
 #include <cerrno>
 #include <cstring>

src/font.cpp

@@ -1,3 +1,4 @@
+#include <cstdint>
 #include "overlay.h"
 #include "file_utils.h"
 #include "font_default.h"

src/keybinds.cpp

@@ -1,3 +1,4 @@
+#include <cstdint>
 #include "overlay.h"
 #include "timing.hpp"
 #include "logging.h"

src/overlay_params.cpp

@@ -1,3 +1,4 @@
+#include <cstdint>
 #ifdef _WIN32
 #include <windows.h>
 #endif