The basic functions are all working properly. Now the model works by
using diesel to connect the sql database and retrieve all the items
and organize them. Then it'll ensure any additions and deletions are
correct and happen first on the database before adding them to the
model.
There is still a C++ proxyModel inbetween QML and Rust, but
this proxyModel interfaces with the Rust model instead of the C++
SqlTableModel.
Since every slide is asking for their own, we don't need to loop
through all slides, we just use the index to put the thumbnail into
the right slides and emit data changed.
This model, built in Rust, works in that functions are getting called
and the right pieces are mapped into the model. I've yet to connect
things up to see if QML is talking to the model just yet.
This commit finally has a working basic slide_obj implemented in Rust!
There are likely still some things that need to be tweaked and
massaged in order for things to translate back and forth from QML to
Rust.
The key was to make the old SlideObject written in C++ to act as a
bridge between QML and Rust. QML can't seem to understand CXX-QT's
QMap_QString_QVariant type as a QVariantMap and thus didn't translate
the Javascript object properly. Having the call first go into a C++
class translated it and then was trivial to pass into Rust.
This add looping primarily for videos but I've added in the groundwork
for looping through any kind of slide. This obviously will be
implemented differently for each type of slide, but this way the
groundwork is done already.
