Config File Updates Overview

[wtgee]

• [ ] Add lots of documentation to config file to explain options.
• [x] ~~Rely on config file instead of env vars (#555).~~
• [ ] Ability to override individual nested keys.
  • [x] Via config server
  • [x] Via pocs_local.yaml file.
• [x] pyserial options #181
• [x] Save config in local file #238
• [x] issues with testing and config #259
• [x] Target constraints in config #402

Maybe:

• [x] ~~Have a directory config file in $PANDIR and a script for parsing (discussed in #555).~~
• [x] Add a get_config_value('mount.serial.port') that can be used to retrieve a single (nested) value, mostly for use in utility functions. -or-
• [x] Add a config query service.
• [x] ~~Convert config to ChainMap rather than using a simple dict update. This allows for updates to underlying configs and easier overriding.~~
• [ ] Consider using the pydantic Settings module.

Would be nice:

• [x] Web/notebook interface (https://github.com/panoptes/panoptes-tutorials/issues/48)