feat: Add US location name lookup choropleth, scattergeo traces

[camdecoster]

Description

Add USA location name lookup for locationmode: "USA-states" in choropleth, scattergeo traces.

Closes #7437.

Changes

• Add list of USA location names
• Add USA location name lookup to geo location utilities
• Update attribute description
• Update test to use new lookup

Testing

• Be on main
• Open test/image/mocks/geo_choropleth-usa.json
• Replace the 'TX' location with 'Texas'
• Run plotly.js devtools with npm start
• Open the geo_choropleth-usa mock
• Note that Texas isn't showing in the choropleth
• Discard changes
• Switch to this branch
• Reload the mock (which has been updated in this PR with the above change)
• Note that Texas is showing in the choropleth

Notes

• This is a simple string comparison with no regex. Regex could be used in the future.
• Washington DC has a few entries to cover potential versions of the location name

[archmoj]

Thanks @camdecoster for the PR.
Would you please add a test e.g. displaying all the states in an image test?

[emilykl]

@camdecoster Maybe you could modify the existing geo_choropleth-usa mock to include two subplots, one which uses state names and one of which uses abbreviations?

[emilykl]

See my two minor comments but overall looks good 👍

[archmoj]

Thank you @camdecoster and @emilykl.
You could simply label this PR (as well #7707 and #7730) as features.