fix: remove kernel mouse cursor demo, +add two future-implemented syscalls for shutdown & reset

programs/include/Api/Syscall.hpp

@@ -37,6 +37,8 @@ namespace Zenith {
     static constexpr uint64_t SYS_WAITPID         = 23;
     static constexpr uint64_t SYS_TERMSIZE        = 24;
     static constexpr uint64_t SYS_GETARGS         = 25;
+    static constexpr uint64_t SYS_RESET           = 26;
+    static constexpr uint64_t SYS_SHUTDOWN        = 27;
 
     struct FbInfo {
         uint64_t width;

programs/include/zenith/syscall.h

@@ -176,4 +176,15 @@ namespace zenith {
         if (rows) *rows = (int)(r >> 32);
     }
 
+    // Power management
+    [[noreturn]] inline void reset() {
+        syscall0(Zenith::SYS_RESET);
+        __builtin_unreachable();
+    }
+
+    [[noreturn]] inline void shutdown() {
+        syscall0(Zenith::SYS_SHUTDOWN);
+        __builtin_unreachable();
+    }
+
 }