Add geoswitching usage pixels

[graeme]

Task/Issue URL: https://app.asana.com/0/0/1206107031155633/f

Description:

Adds the Pixels described in the parent of the linked PR task to monitor Geoswitching during the Waitlist beta

Steps to test this PR:

1. Run the app in the debugger
2. Make sure you’re an internal user and you’ve used an invite code to access NetP
3. Go to Settings -> Network Protection -> VPN Settings -> VPN Location
4. You should see the Pixel for opening Geoswitching in the debugger
5. Select a location
6. ** You should see the Pixel for selecting custom int the debugger
7. Select Nearest
8. ** You should see the Pixel for selecting nearest in the debugger
9. There is also a pixel for if there is no list returned. Perhaps get creative with how you test that, but my guess is we won’t get many of these due to the fact they’ll be most likely to occur when offline.

Copy Testing:

• Use of correct apostrophes in new copy, ie ’ rather than ’

Orientation Testing:

• Portrait
• Landscape

Device Testing:

• iPhone SE (1st Gen)
• iPhone 8
• iPhone X
• iPhone 14 Pro
• iPad

OS Testing:

• iOS 14
• iOS 15
• iOS 16

Theme Testing:

• Light theme
• Dark theme

—

Internal references:

Software Engineering Expectations
Technical Design Template

[samsymons]

What do you think about firing off a debug error pixel when this call throws?

[samsymons]

Changes look good, I've left one optional comment about adding an additional pixel for errors when fetching the location list.