enhancement: location field on preview & static option

[Paul-Bob]

Description

Adding static field option for location field and enabling it by default on preview.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
  • https://docs.avohq.io/3.0/fields/location.html#static
• I have added tests that prove my fix is effective or that my feature works

[codeclimate]

Code Climate has analyzed commit f274e4e and detected 0 issues on this pull request.

View more on Code Climate.

[github-actions]

This PR has been merged into main. The functionality will be available in the next release.

Please check the release guide for more information.