update TODO list with some new ideas

tools/lammps-gui/TODO.md

@@ -13,6 +13,9 @@ LAMMPS-GUI TODO list:
 - add list of 5(?) most recently opened/saved files to file dialog (and also write to settings state on exit) (note: must store full path!)
 
 # Long term ideas
+- write a "wizard" dialog that can be used for beginners to create an input file template for a few typical use scenarios
+- use the "lammps_get_last_thermo" function to get access to thermodynamic data during a run and add plot/graph dialog that can plot one or more of those graphs while the simulation is still running
+- possibly also implement a callback interface, so that external programs can be called after thermo data is updated.
 - support single stepping, i.e. process input line by line (need to detect continuation chars!) with highlighting active line(s)
 - have command text input file in/above status bar where individual commands can be tested. have insert button to copy line into file at the current point
 - support text completion as done with lammps-shell