Import howett.net/plist by its correct name

Also bumping the version to one with a go.mod.

vendor/howett.net/plist/bplist.go

@@ -0,0 +1,26 @@
+package plist
+
+type bplistTrailer struct {
+	Unused            [5]uint8
+	SortVersion       uint8
+	OffsetIntSize     uint8
+	ObjectRefSize     uint8
+	NumObjects        uint64
+	TopObject         uint64
+	OffsetTableOffset uint64
+}
+
+const (
+	bpTagNull        uint8 = 0x00
+	bpTagBoolFalse         = 0x08
+	bpTagBoolTrue          = 0x09
+	bpTagInteger           = 0x10
+	bpTagReal              = 0x20
+	bpTagDate              = 0x30
+	bpTagData              = 0x40
+	bpTagASCIIString       = 0x50
+	bpTagUTF16String       = 0x60
+	bpTagUID               = 0x80
+	bpTagArray             = 0xA0
+	bpTagDictionary        = 0xD0
+)