CodeEditUI: Added snapshot tests & Keep CircleCI?

[lukepistrol]

Description

Added snapshot tests for CodeEditUI components EffectView, FontPickerView, HelpButton & SegmentedControl

Checklist

• I read and understood the contributing guide as well as the code of conduct
• My changes generate no new warnings
• My code builds and runs on my machine
• I documented my code
• Review requested

[lukepistrol]

According to a google search CircleCI has some problems with rendering color correctly in snapshots.

Maybe because they use VMs and not dedicated machines. The snapshot tests run perfectly on our Mac mini runner as well as locally (did 1000 repetitions without a failure).

We might want to disable the test workflow on CircleCI temporarily (keep lint) until we figure out a way to run snapshot tests reliably.

We should be able to run snapshot tests.

Thoughts? @austincondiff @MarcoCarnevali @wdg @nanashili

pointfreeco/swift-snapshot-testing#313
pointfreeco/swift-snapshot-testing#419

[0xWDG]

Can we test in black and white for the snapshots?

[lukepistrol]

Can we test in black and white for the snapshots?

Doesn't matter when the color is darker/brighter. It will still be different in greyscale.

Also it works on our Mac mini runner just fine without any problems and faster too!

[lukepistrol]

I just had a conversation with @MarcoCarnevali and we decided that for now we will exclude the test action from CircleCI.

[austincondiff]

LGTM