fix: settings for scan types

[teodora-sandu]

Description

At the moment when we change the scan type selection the Tree Nodes associated with them don't get re-enabled. This seems to be because the changes in the ScanTypesPanel don't actually get trickled up to SnykProjectSettingsConfigurable in order for the apply() method to run when isModified() returns true. The reason for this is that when the selections change the Dialog.isModified() function called in isScanTypeChanged in SnykSettingsDialog hasn't registered that there has been a change. We're now achieving that with the use of bindSelected.

We have some validation in place so that pre-apply we don't allow people to deselect all scan types. The new selections only get "persisted" globally once the apply() function gets called so the new action listener we added for each checkbox also needs to locally persist the selection changes in order for the validation to work.

Docs about these panels that led to this implementation:

• https://plugins.jetbrains.com/docs/intellij/kotlin-ui-dsl.html#integrating-panels-with-property-bindings
• https://plugins.jetbrains.com/docs/intellij/kotlin-ui-dsl-version-2.html#cellbind

There are two more panels that probably have this issue. The SeveritiesEnablementPanel and IssueViewOptionsPanel. Before I make those changes there I want to see if this approach is okay.

Checklist

• Tests added and all succeed
• Linted
• CHANGELOG.md updated
• README.md updated, if user-facing

[bastiandoetsch]

Nice finding, didn't know bindSelected before.