feat: 127 map create

[franTarkenton]

Description

Added map widget to the create alert page, and enabled bi directional communication between the non spatial basin / alert level selectors, and the map, and vice versa.

Type of change

• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [ ] manual test in the local environment, experimenting with adding / removing basin alert level combinations

Checklist

• [x] I have read the CONTRIBUTING doc
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have already been accepted and merged

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[franTarkenton]

related to #127