Add the possibility to save and load plot presets

It would be nice to have the possibility to save and load plot presets. I imagine that in the future, it would be possible to run the visualizer with:
```console
robot-log-visualizer --present
```
or even better load it from the GUI.

All the plots from the associated dataset would then be automatically displayed. This would save time, as during debugging, we often need to open the same plot for different experiments.

cc @traversaro @S-Dafarra

Start by locating the visualizer's command-line entry point and GUI plot-selection workflow. Define how a preset identifies the plots for an associated dataset and what the --present behavior should be; done means presets can be saved and loaded consistently from the supported interface.

Written by the indexing model from the issue text.