Upgrades to RnR: deploying initial states and exception handing in the async framework

[ghost]

[Short description explaining the high-level reason for the pull request]

Additions

• Added an initial start parameter to be generated from either:
  • The last observation
  • The first forecast point
• Added integration for downstream RFC forecasting

Removals

Changes

• Edited plotting paths to ensure no file errors
• type casted plot IDs in netcdf file to ensure no mapping errors
• Edited a broken JSON key path

Testing

Screenshots

This shows the starting geopackage, and the downstream LID. Flow will be routed from the subset end to the downstream end.

>>>mask = (ds.flow.values != 0).squeeze()
>>> ds.feature_id.values[mask]
array([1060386, 1060387, 1060388, 1060389, 1060390, 1074884, 1074885,
       1074911])
>>> ds.flow.values[mask]
array([[2491.8818],
       [2491.8818],
       [2491.8823],
       [2341.6064],
       [1888.9081],
       [2491.8823],
       [2491.8823],
       [2491.8823]], dtype=float32)

and flow is being propagated through the network

Notes

Todos

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows project standards (link if applicable)
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Visually tested in supported browsers and devices (see checklist below 👇)
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• Reviewers requested with the Reviewers tool ➡️

Testing checklist

Target Environment support

• Windows
• Linux
• Browser

Accessibility

• Keyboard friendly
• Screen reader friendly

Other

• Is useable without CSS
• Is useable without JS
• Flexible from small to large screens
• No linting errors or warnings
• JavaScript tests are passing