add timing and late/early trigger plots

Add timing and late/early trigger plots:

• https://faser-grafana.web.cern.ch/render/d-solo/FOSuFEf4z/pmt-signal-timing?orgId=1&from=1682416516474&to=1683021316474&panelId=4&width=1000&height=500&tz=Europe%2FBerlin
• https://faser-grafana.web.cern.ch/render/d-solo/B84-cEBVz/late-trigger-fractions?orgId=1&from=1682415061799&to=1683019861799&panelId=3&width=1000&height=500&tz=Europe%2FBerlin
• https://faser-grafana.web.cern.ch/render/d-solo/B84-cEBVz/late-trigger-fractions?orgId=1&from=1682415061799&to=1683019861799&panelId=5&width=1000&height=500&tz=Europe%2FBerlin