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Common UI components: button, checkbox…
Single “mattermost-webapp” or “plugin-api” package import to rule them all
Common eslint configs / golangci configs?
Post menu pluggable section, deprecate to allow for accessibility
filtering, string <> localization
Rely on dependabot to automate updates of the public module and in turn help spur unified tooling across all the plugin repositories.
Review webpp plugin API for completeness