Enable Geonames functionality for Location field in Works

[jlhardes]

Descriptive summary

Geonames is not connected to Location field in the Edit Work form yet so Location metadata cannot be saved.

Expected behavior

Location should function in work editing on valkyrized hyrax.

Actual behavior

Location field is not offering results from Geonames in Edit Work form and no value can be saved.

Steps to reproduce the behavior

1. As a logged in user, create a new Work
2. On the Descriptions tab of the Edit Work form, click Additional Fields and scroll to the Location field.
3. Try searching for a location and no results are offered and no value can be saved in form field.

Related work

PR #5157 - Update PcdmCollection metadata to match existing ::Collection metadata (discussing what is needed for collections metadata)

[jessicahilt]

We're going to check configuration.

[tpendragon]

We think this works in Nurax, but not in Nurax PG

[eliotjordan]

This worked for me after setting a valid geonames service username:

config.geonames_username = 'username'

https://github.com/samvera/hyrax/blob/main/.koppie/config/initializers/hyrax.rb#L107

[eliotjordan]

Closed by #6159

Tested in nurax-pg.