Api changes :
- removeLastPathElement do not takes extra arguments
`removePreSeparator` and `removePostSeparator`.
This is not needed as path do not need special tailing separator.
- Only one function `split`. Arguments can be implicitly convert to
string. No need for overloading functions to explicitly cast them.
- `split` function takes another argument `trimEmpty`. If true, empty
element are removed.
Path manipulation now almost pass trough a vector<string> to store each
path's part.
Most of the complex works is now made in the normalizeParts function.
Instead of having a single method `listBooksIds` that tries to be
exhaustive about all the filter and sort option, split the method in
two separated methods `filter` and `sort`.
The `filter` method takes a `Filter` object that represent on what we are
filtering. This object has to be construct before calling `filter`.
```cpp
Filter filter;
filter.query("Astring");
filter.acceptTags({"nopic"});
// return all book in eng and with "Astring" in the tile or description".
library.filter(filter);
//equivalent to
library.listBooksIds(ALL, UNSORTED, "Astring", "", "", "", {"nopic"});
// or better
library.filter(Filter().query("Astring").acceptTags({"nopic"}));
```
The method `listBooksIds` has been marked as deprecated.
Add a small test on the library.
The `common` name is from the time where kiwix was only one repository
for all the project (android, desktop, server...).
Now we have split the repositories and kiwix-lib is the "common" repo,
the "common" directory is somehow nonsense.
The library now contains (simple) methods to handle bookmarks.
The bookmark are stored in a separate xml file.
Bookmark are mainly a couple (`zimId`, `articleUrl`).
However, in the xml we store a bit more data :
- The article's title (for display)
- The book's title, lang and date (for potential update of zim files)
It is up to the book to manage its attribute.
Also remove the `absolutePath` (and `indexAbsolutePath`). The `Book::path` is always stored
absolute.
The fact that the path can be stored absolute or relative in the
`library.xml` is not relevant for the book.
There is no more integrated build of dependencies in the build system.
Dependencies are discovered using pkg-config except for ctpp2 where there
is no pkg-config file.