Created structure of zip module
Added LibArchive dependency with the corresponding cmake find files
definition of module with version
Added libarchive dependecy
zip:entries function simple implemtation
Fixed build in Linux
Changed name to archive module
Merged with previous version
fixed two build problems:

- the cmake module needs to be searched for with a case sensitive name
- one include needs to be guarded because it's only available on Windows
streaming archive:entries
- introduced a schema for entries and options
- cleanup of entries function
- tests for .zip, tar.gz, and tar.bz2
new test to test for errors of invalid archives
- extract-text#1 function (without transcoding)
- refactored the ItemSequence and Iterator for reusing
extract-text#2 and extract-text#3
better documentation
make sure that multiple xquery functions accessing the same zip file works
extract-binary
added the archive:options function to return algorithm and format options of an archive
more documentation
Partial implementation of create function
fixed diversion