Change intervalls between trips

[Machriam]

• For heatstress experiments less time between trips is desirable than for normal running
• This Ticket should reduce the minimal delay between trips in a tour to 0 seconds and when restarting a tour the delay between trips should be adjustable

[github-actions[bot]]

Changes of Pull Request #181

Commit messages for #178

• ee3d8ae55678b2d7dc4f9be200def3ccb0906d00 Minimum intervall between photo trips can now be set to 1 second. Around 0.017 minutes. The current intervall is fetched and displayed in the add new tour options. There a new intervall can be specified, which is used upon clicking the pause/resume button