feat(gatsby-plugin-sharp): make default image quality option configurable

[ivanicharts]

resolve #4873

[pieh]

Hey, did you see #7548 ? It was using same approach but this not enough, as it won't apply to other uses of gatsby-plugin-sharp other than gatsby-transformer-sharp

[ivanicharts]

@pieh sorry, missed it

[pieh]

Note worthy - #10210 sets up foundation to set default quality setting via plugin options for gatsby-plugin-sharp

[LekoArts]

Hi @ivanicharts 👋 Since #10210 is merged you could rebase your fork onto master and work of that base.

[wardpeet]

Thanks so much for the PR!

Unfortunately, we're not going to merge this at this time. We don't set a defaultQuality anymore in transformer sharp, it's handled by sharp-plugin.

As such--we're going to close this out. We want you to know that we certainly want to keep you as a contributor to Gatsby, so we'd encourage you to check out our open issues.

Thanks again, and we look forward to seeing more PRs from you in the future! 💪 💜