feat: expose drive labels to userspace, render in Files

kernel/src/Api/Syscall.hpp

@@ -222,6 +222,9 @@ namespace Montauk {
     /* Input.hpp */
     static constexpr uint64_t SYS_INPUT_WAIT          = 123;
 
+    /* Filesystem.hpp */
+    static constexpr uint64_t SYS_DRIVELABEL          = 124;
+
     static constexpr uint32_t CLIPBOARD_MAX_TEXT_BYTES = 256 * 1024;
 
     static constexpr uint32_t IPC_SIGNAL_READABLE   = 1u << 0;