Extend libkiwix structures to be contructed/updated from libzim structures

[maneeshpm]

Fixes #430
This PR depends upon #536

This is the second stage to remove usage of wrapper structures from libkwix. In this step, we will extend the libkiwix structures to use libzim structures directly. This will still include the wrapper structures in the API but their usage will be derived from that of libzim structures.

Changes included in this PR:

• Modify kiwix::Book to be updated from a zim::Archive
• Modify kiwix::Manager to import a zim file from a zim::Archive
  Add overloads for libzim structure in kiwix::Book

[maneeshpm]

After the changes of the last PR and this PR, the use of kiwix::Entry is also dropped. It is only being used inside kiwix::Reader and kiwix::Searcher (excluding JNI). Hence no change is needed there.

@mgautierfr I guess we have covered all the wrapper structures now excluding JNI. Is there anything I am missing?

[maneeshpm]

This PR depends upon openzim/libzim#582

[kelson42]

I guess this PR would benefit of a rebase

[maneeshpm]

@kelson42 done!

[mgautierfr]

Few things to change.

Please rebase (again) on master to make the CI download the correct dependencies archive.
Remove the draft status on the PR (if accurate) (remove WIP from the title is not enough)

[codecov]

Codecov Report

Merging #576 (19afe94) into master (b4f7dfa) will decrease coverage by 0.38%.
The diff coverage is 88.23%.

@@            Coverage Diff             @@
##           master     #576      +/-   ##
==========================================
- Coverage   65.17%   64.79%   -0.39%     
==========================================
  Files          53       53              
  Lines        3765     3730      -35     
  Branches     1886     1856      -30     
==========================================
- Hits         2454     2417      -37     
- Misses       1309     1311       +2     
  Partials        2        2              

Impacted Files	Coverage Δ
include/book.h	93.33% <ø> (ø)
include/reader.h	88.88% <ø> (ø)
src/reader.cpp	28.49% <20.00%> (-15.46%)	⬇️
src/book.cpp	94.89% <94.11%> (-1.46%)	⬇️
src/tools/archiveTools.cpp	89.85% <96.29%> (+2.09%)	⬆️
src/manager.cpp	77.98% <100.00%> (ø)

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[kelson42]

@maneeshpm Does it fix #166. If not, updating #166 with what is left to do would be helpful.

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[kelson42]

@mgautierfr Can we merge this?

[maneeshpm]

@kelson42 rebase fixup done.