Add IBundleReader events
Add Extract and Read methods
Add ZipFileReaderWrapper
Start work on ZipBundleReader and tests
Change constructor and Extract signatures and fix typo.
Remove EntriesExtracted and EntriesTotal from ZipEntryReadEvent

Remove EntriesExtracted and EntriesTotal since
ZipFile.ExtractProgressEventArgs does not actually contain anything but
0 for these values.
Refactor test data a bit.