Motivation:
See the linked issues for details.
The most notable user-relevant bits are:
- This cleans up the `MountedSSHStore`: decomposed into its orthogonal parts
- This brings us pretty close to being able to then implement a JSON-based config.
- Store query parameters can be JSON
- Stores can entirely be specified via JSON objects, but this is not yet hooked up to anything.
Also behind the scenes have these benefits:
1. The docs are moved out of the headers, good for less rebuilding when they changes
2. Stores are always constructed from store configs
3. Use JSON, avoid custom serializers
Context:
Part of #11106
Co-Authored-By: Robert Hensing <robert@roberthensing.nl>
Co-authored-by: Sergei Zimmerman <145775305+xokdvium@users.noreply.github.com>
