drop of products in visu

New methods to find a datasource item from its product ID_KEY

spelling fix

Calls the update of the graph's units and range data of a variable have been loaded # Conflicts: # gui/src/Visualization/VisualizationGraphWidget.cpp

Separate the initialization of the properties of the graph of the update of the units of the graph. The initialization of the properties is carried out when adding a variable in the graph, the update of the units is carried out when loading the data of this variable

Updates PlottablesRenderingUtils to use variable's type instead of dataseries

Updates AxisRenderingUtils to use variable's type instead of dataseries

Updates VisualizationGraphHelper to use variable's type instead of dataseries

Reads variable's metadata to retrieve the type of data series (scalar, vector, spectrogram)

Move the AMDA data type to a type accessible from core