Include commonly used configurations in Settings

[dciborow]

The current settings page provides a minimum experience, which requires existing knowledge of Black.

Black has already worked to minimize the potential command line inputs a user could provide. These should be more specifically declared in the Settings page.

At least three settings should be included: config, line-count, and preview.

For example, to point Black to a configuration location, the following must be provided.

Having a dedicated "Setting" field, would improve the experience when entering this parameter. (I knew better, and I still put config --pyproject.yaml" into a single configuration...). BONUS: It would be great if there was an "auto-detect" button, which would scan for files like "pyproject.toml" or "black.toml" and provide a suggestion for this when pressed.

Line Count is a setting black particularly brought to the CLI, because they understood this was the most likely setting to be changed. When this setting is set in a configuration file, the value should be loaded and displayed here.

Preview is a flag that can provide a sneak peak of upcoming changes. A simple check box would provide the basic functionality.

Other configurations to consider including are the following two. The rest of the configurations do not make sense to include for an IDE experince, or are complex and should be in a configuration file directly.

• 'fast' vs 'safe'
• target-version

[dciborow]

here is an example of the configuration avaiable when using the pycharm extension.

[DetachHead]

the pycharm extension has lots of issues regarding its settings, see lensvol/intellij-blackconnect#55