Improvements for Bench Test (1/?)

Some improvements for the next Bench Test as discussed.

State Widget shows ids of states
Updated state lists with separated Seed and Ejector states
Removed "k" prefix from state names
Reworked state reference system for next and major states
Created list for stages (to reference to in states)
State Change Widget also shows ids of states
State Change Widget uses state list based on target selection (Ejector state list for Ejector target)
Add connection status panel to the left side of the header
Updated and improved D2-TM-Sim

[x] I have signed the individual contributor's license agreement and sent it to the board of the WüSpace e. V. organization.

wuespace / telestion-project-daedalus2