ci: deploy some apps preview only when PR has label

[shoom3301]

Summary

Since this repo includes multiple apps, we do not want to build all of them on each PR because it causes long build queues in Vercel.
Some apps (see the list bellow) are not required to be built on each PR so we run them only a PR is labeled with a specific label.
This label is defined in the project settings on Vercel in Settings/Git/Ignored Build Step script.
For example, the label for the widget-configurator is preview-widget-cfg:

node tools/scripts/ignore-build-step.js --app=preview-widget-cfg

List of applications and their labels:

• widget-configurator: preview-widget-cfg
• cosmos: preview-cosmos
• sdk-tools: preview-sdk-tools

In addition, I expanded the list of branches that should not be deployed in preview.
Before this fix only configuration branch was excluded, now:

['main', 'configuration', 'release-please--branches--main']

This PR is a demo of the new feature.
As you can see, widget-configurator is buit when cosmos and sdk-tools are skipped

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
cowfi	🔄 Building (Inspect)	Visit Preview	Dec 31, 2024 1:19pm
explorer-dev	🔄 Building (Inspect)	Visit Preview	Dec 31, 2024 1:19pm
swap-dev	🔄 Building (Inspect)	Visit Preview	Dec 31, 2024 1:19pm
widget-configurator	🔄 Building (Inspect)	Visit Preview	Dec 31, 2024 1:19pm

2 Skipped Deployments

Name	Status	Preview	Updated (UTC)
cosmos	⬜️ Ignored (Inspect)	Visit Preview	Dec 31, 2024 1:19pm
sdk-tools	⬜️ Ignored (Inspect)	Visit Preview	Dec 31, 2024 1:19pm

[anxolin]

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