feat: added support for constructors/desctructors

yak-kernel/src/rt/kmain.c

@@ -3,6 +3,7 @@
 #include "yak/platform/generic/platform.h"
 
 void kmain() {
+    _init();
     // kmain is called from one of the bootloader implementations
 
     // perform platform specific initialisation
@@ -10,4 +11,5 @@ void kmain() {
 
     // this should (eventually) be unreachable
     panic("End of kmain");
+    _fini();
 }