Bug fix: allow setting location on sites/points to null

[hudson-newey]

Bug fix: allow setting location on sites/points to null

Currently, it is impossible to remove the location of a site/point.

This PR adds the ability for users to completely remove site locations by setting both the "longitude" and "latitude" inputs to empty values on the site/point edit page.

Changes

• Changed the location-input.component.ts so that it also updates the models customLongitude and customLatitude
• Add tests to the location-input.component.spec.ts to test that the correct error messages are shown when only a longitude or only a latitude is input
• Add tests to the location-input.component.spec.ts to test that location is emitted as null when both the inputs are empty
• Add tests to assert that the site/point edit component constructs the a model with longitude and latitude set to null when location inputs are empty
• Add documentation to README.md to show that a Google Maps API key is now required to run in both development and production environments
• Upgrades @angular/google-maps from 16.2.8 -> 16.2.12 (the latest version for Angular 16)

Problems

None

Issues

2040

Visual Changes

None

Final Checklist

• [x] Assign reviewers if you have permission
• [x] Assign labels if you have permission
• [x] Link issues related to PR
• [x] Ensure project linter is not producing any warnings (npm run lint)
• [x] Ensure build is passing on all browsers (npm run test:all)
• [x] Ensure CI build is passing
• [ ] Ensure docker container is passing (docs)

[github-actions[bot]]

Size Change: +21 B (0%)

Total Size: 2.9 MB

Filename	Size	Change
dist/workbench-client/browser/main.********.js	1.06 MB	+12 B (0%)
dist/workbench-client/server/main.js	1.78 MB	+9 B (0%)

ℹ️ View Unchanged

| Filename | Size | | :--- | :---: | | `dist/workbench-client/browser/assets/environment.json` | 555 B | | `dist/workbench-client/browser/chunk-7SGCG2G3.js` | 1.08 kB | | `dist/workbench-client/browser/index.html` | 4.1 kB | | `dist/workbench-client/browser/manifest.json` | 150 B | | `dist/workbench-client/browser/polyfills.********.js` | 12.2 kB | | `dist/workbench-client/browser/styles.********.css` | 32.3 kB | | `dist/workbench-client/server/776.js` | 4.2 kB |

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[github-actions[bot]]

Unit Test Results

         6 files           6 suites   7m 28s :stopwatch: 21 258 tests 20 634 :heavy_check_mark: 624 :zzz: 0 :x: 21 366 runs  20 742 :heavy_check_mark: 624 :zzz: 0 :x:

Results for commit 2fc01abe.

:recycle: This comment has been updated with latest results.