Adding togglefullscreen patch

patch/include.c

@@ -10,6 +10,10 @@
 #include "systray.c"
 #endif
 
+#if TOGGLEFULLSCREEN_PATCH
+#include "togglefullscreen.c"
+#endif
+
 #if ZOOMSWAP_PATCH
 #include "zoomswap.c"
-#endif // ZOOMSWAP_PATCH
+#endif

patch/include.h

@@ -6,6 +6,10 @@
 #include "systray.h"
 #endif
 
+#if TOGGLEFULLSCREEN_PATCH
+#include "togglefullscreen.h"
+#endif
+
 #if ZOOMSWAP_PATCH
 #include "zoomswap.h"
-#endif // ZOOMSWAP_PATCH
+#endif

patch/togglefullscreen.c

@@ -0,0 +1,7 @@
+void
+togglefullscreen(const Arg *arg) {
+    if (!selmon->sel)
+        return;
+
+    setfullscreen(selmon->sel, !selmon->sel->isfullscreen);
+}

patch/togglefullscreen.h

@@ -0,0 +1 @@
+static void togglefullscreen(const Arg *arg);