META: Enable Running Locally even for new images/instruments

[emirkmo]

Request by @lgalbany

Currently a connection via the API is required and that is expected to stay being required. However the connection can be abstracted to any API, not just ours, and then this could fetch local values. There are some t

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• Write function for guessing filter from header without needing registered filters #145
• Add environment variables for downloading catalogs locally #146
• Add environment variables for accessing AU database via read-only service account (Currently requires AU VPN). #147
• Refactor API call to have a local config version that uses localhost endpoint with a temporary DB #148
• Refactor run_photometry or add new run_local_only_photometry that uses new API endpoint and these new features. #149
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