Closes #3297 - Adds default setting for compact graph

[TJohnsonSE]

Description

I've added the requested feature (#3297) to have a configuration to default to the compact view in the Commit Graph. This feature adds a checkbox to the Gitlens settings page, a relevant configuration setting to the GraphConfig and GraphComponentConfig interfaces, and then the logic to actually implement defaulting to the compact graph view in the graphWebView component.

Testing indicated it's all working as expected.

Checklist

• I have followed the guidelines in the Contributing document
• My changes follow the coding style of this project
• My changes build without any errors or warnings
• My changes have been formatted and linted
• My changes include any required corresponding changes to the documentation (including CHANGELOG.md and README.md)
• My changes have been rebased and squashed to the minimal number (typically 1) of relevant commits
• My changes have a descriptive commit message with a short title, including a Fixes $XXX - or Closes #XXX - prefix to auto-close the issue that your PR addresses

[eamodio]

@TJohnsonSE Thanks for this! Unfortunately because this modifies files in the plus folders, we can't accept this PR directly without a Contributor License Agreement (CLA). And we don't currently have a CLA process in place yet.

So I can let this sit for a while until we work out that CLA process (though it will likely be a couple of months) -- or I can close this an implement the feature directly. Thoughts?

[TJohnsonSE]

@eamodio of course, thanks for looking at this! That is unfortunate to hear, I did read the note before contributing but didn't pay attention to the directories.

If it's something you don't mind sitting on and revisiting later down the road, I'm okay with that. If it's a feature you just want to get in since it's already done, I'm also okay with the PR being closed and having you implement it directly.

I'll see where else I can focus in the meantime, and I appreciate the feedback.