Add a new custom field type geo_location

[gjvoosten]

A new type of custom field is introduced: geo_location. When such a field is defined in the dictionary, users can fill in the coordinates of a geographic location, or set these by dragging a marker on a map.

Closes AB#1095

User changes

• Users can now fill in custom fields of type geo_location if these are defined in the dictionary.

Superuser changes

• None.

Admin changes

• None.

System admin changes

• [x] anet.yml or anet-dictionary.yml needs change You can add something like this to the dictionary:

  fields:
    report:
      customFields:
        gridLocation:
          type: geo_location
          label: Grid location
  

• [ ] db needs migration
• [ ] documentation has changed
• [ ] graphql schema has changed

Checklist

• [x] Described the user behavior in PR body
• [x] Referenced/updated all related issues
• [x] commits follow a repo#issue: Title title format and these 7 rules
• [x] commits have a clean history, otherwise PR may be squash-merged
• [ ] Added and/or updated unit tests
• [x] Added and/or updated e2e tests
• [ ] Added and/or updated data migrations
• [ ] Updated documentation
• [x] Resolved all build errors and warnings
• [ ] Opened debt issues for anything not resolved here