Add a first figure to Modelica.Blocks.Examples.PID_Controller

[henrikt-ma]

With love from the Modelica design meeting held this week:

This PR adds the first case of an example making use of the Modelica Figure annotation introduced in Modelica 3.5. Note that this means there are actually two important changes in this PR:

• Switching language version to Modelica 3.5.
• Adding a figure to the PID_Controller example.

This is what the added figure looks like in System Modeler:

[dietmarw]

I guess before such change can be accepted the MAP-LIB project first of all needs to have some strategic decision on what the next release is going to be and what MLS version it should be based on.

[DagBruck]

Tested in Dymola 2023x Refresh1.

[henrikt-ma]

With the bumping of Modelica language version now being done separately in #4208, I removed this part of the present PR, leaving just the first figure.

[tobolar]

@henrikt-ma Looking forward to use this widely!

Any decission to use Figure.preferred = true in MSL per default?

[HansOlsson]

@henrikt-ma Looking forward to use this widely!

Any decission to use Figure.preferred = true in MSL per default?

One consideration would be if there are multiple figures, I prefer not to have more than one preferred and usually have one preferred.
(First part is based on the general rule: if everything is x nothing is x).

[henrikt-ma]

@casella, with #4208 out of the way, wouldn't it be great to add this for 4.1 so that everyone has at least one example as source of inspiration for adding more figures?

[maltelenz]

Looks good to me.

[AHaumer]

Discussed it in today's MAP-Lib meeting, will merge this, need a second reviewer

[AHaumer]

@TManikantan please back-port this to the 4.1.0 alpha-branch

[Harisankar-Allimangalath]

@AHaumer the branch is deleted from the repo and I can't access it so all I could do is cherry pick that commit from master and then add it to the maint/4.1.0. but I don't know if that is a standard MSL work flow or even allowed to do it @henrikt-ma .

As far as I know, you will still be having that branch in the local checkout, you can either push it directly to the maint/4.1.0 or to this repo and I shall look into adding it to the maint/4.1.0.

[henrikt-ma]

I'm not sure we have developed routines for how to do this, but in case it helps, I have now restored the branch.