make HTTP retry when the GoPro is overwhelmed

[klaernie]

replace net.http with go-retryablehttp

My HERO12 did not like being asked for more than about 5-7 files simultaneously. Instead it dropped some of the /gp/gpMediaMetadata requests with a timeout. So after the files where the call to gpMediaMetadata was successful were downloaded, I got presented with a bunch of errors where it didn't work, and of cause those files were not downloaded.

Switching to a retrying approach means that we still hammer the GoPro for the first couple seconds, but allow the requests to proceed later.

Since go-retryablehttp allows it, I set it up to retry with a lot of jitter, so the camera should not get hit with multiple requests at the same time anymore. I also went for the approach that does not require touching all the points where the pkg/utils/client is used, but instead slipped retryablehttp underneath the Client that already was used in all other places.

Please note, as with my other PRs - I'm a beginner at working with golang, and fixed this mainly for me, since it cost me 3 days to import 35GB of footage due to having to retry again and again. So if anything of this jumps out as nonsensical, please tell me.

Type:

• [X] Bug fix
• [ ] New feature
• [ ] Breaking change
• [ ] Documentation

Camera:

• [X] GoPro
• [ ] Insta360
• [ ] DJI
• [ ] Android
• [ ] This PR adds a new camera

Component:

• [ ] Core logic
• [X] Import
• [ ] Merging
• [ ] Firmware Update
• [ ] Video Manipulation

Checklist before approval:

• Linter pass
• Build pass