Draft: Add combitables

[klausschuch]

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[elmir-nahodovic]

• In [[combitable1d_example]], what is x.0 referencing? Shouldn't that entry in the example be empty?
• I think the link https://doc.modelica.org/om/Modelica.Blocks.Tables.html is outdated, and should at least be replaced by one for Modelica 4.0, https://doc.modelica.org/Modelica%204.0.0/Resources/helpDymola/Modelica_Blocks_Tables.html#Modelica.Blocks.Tables
• (Maybe a general comment on ls-struct) Are the variables with prefix in_/out_ supposed to be added to the FMU by the exporter for each input variable of the tables? Or is it up to the model to contain these variables?
  • For example in [[combitable2d_example]], the terminalsAndIcons.xml gives that in_x is a domain input, but is that variable included in the model that was exported or is it added by the FMU ?
• Since this is Modelica focused, it would be good to use a specific model containing combitables
  • Like the one provided by TorstenBlochwitz in #18, but in the example section
  • It would also be constructive if one combitable example matched example 4.2. 2-d example of a lookup table on a rectilinear grid
    • To show the map both with the context of combitables compared to the general context of ls-struct