(Attempt at) Implement restoring bis

1 switch was harmed in the making of this commit

source/tegraexplorer/io.h

@@ -9,10 +9,17 @@ void makestring(char *in, char **out);
 int del_recursive(char *path);
 int copy_recursive(char *path, char *dstpath);
 int dump_emmc_parts(u16 parts, u8 mmctype);
+int extract_bis_file(char *path, char *outfolder);
+int restore_bis_using_file(char *path, u8 mmctype);
 
 #define PART_BOOT 0x1
 #define PART_PKG2 0x2
 
+#define BOOT0_ARG 0x80
+#define BOOT1_ARG 0x40
+#define BCPKG2_1_ARG 0x20
+#define BCPKG2_3_ARG 0x10
+
 static const char *pkg2names[] = {
     "BCPKG2-1-Normal-Main",
     "BCPKG2-2-Normal-Sub",