feat: add message box dialogs

programs/src/dialogs/Makefile

@@ -60,6 +60,7 @@ LDFLAGS := \
     --gc-sections \
     --hash-style=sysv \
     -u dialogs_run_request \
+    -u dialogs_message_box \
     -m elf_x86_64 \
     -z max-page-size=0x1000
 
@@ -84,7 +85,7 @@ LIBC_CFLAGS := \
     -isystem $(PROG_INC)/libc \
     -isystem $(GCC_INCLUDE)
 
-SRCS := main.cpp filedialog.cpp printdialog.cpp stb_truetype_impl.cpp font_data.cpp
+SRCS := main.cpp filedialog.cpp printdialog.cpp messagebox.cpp stb_truetype_impl.cpp font_data.cpp
 OBJS := $(addprefix $(OBJDIR)/,$(SRCS:.cpp=.o))
 LIBC_PIC_OBJ := $(OBJDIR)/libc_pic.o