Automatic scene detection / ripple editing - Is this possible?

My friend built a script to do this: https://github.com/nriebesehl/video-slate-splitter

The feature in Resolve that you're thinking of is called "Scene Cut Detection" follwed by "Auto Scene Select" which will prompt Resovle to try to find cuts within a continuous segment.

Final Cut Pro X has a feature that gets called "scene detection" that detects the number of people in a shot and identifies whether the shot is a close-up, medium or wide shot, but it's actually called "Find People" and is part of the video and still analysis options.

In the context of Premiere Pro, Scene Detect is a feature implemented while capturing from tape that logs a clip whenever there is a break in tape Time/Date stamp.

A feature that automatically creates edits based on low audio levels for a pre-specified period of time could be helpful.

You could try using Premiere Pro's Ducking feature to more quickly find where you want to add edits.  You'd drop in a music track (just for reference and the ducking part, not for actual use), assign your dialog track as Dialog Audio Type, assign the music track as Music Audio Type, enable Ducking (adjust if needed) and then use Generate Keyframes.  You would then have keyframes to jump to and more quickly place your edits.  You'd delete the music file when done.

Scene detection in Resolve relies on visual changes not audio. 

The easiest way to do what you're asking I can think of at the moment is to have a tall audio track with the waveform showing. Scrub down the sequence looking for the low spots.

Neil