Adapt precision type of G4JLApplication to Simulation

[fhagemann]

If a G4JLApplication is created from a Simulation{T}, the precision type T is also used for the output energies and positions. This PR might not cover all cases yet, but the one reported in #436.

wf = simulate_waveforms(events[1:100], sim, Δt = 1u"ns", max_nsteps = 2000)
plot(wf[1:20].waveform, label = "")

[ Info: Detector has 2 contacts
[ Info: Table has 100 physics events (4152 single charge depositions).
Progress: 100%|█████████████████████████████████████████| Time: 0:00:13
[ Info: Generating waveforms...