• Yarn's global folder can be set via yarn config set global-folder (fix(config): allow global-folder to be set in .yarnrc yarnpkg/yarn#7056) and thus can be persisted.
• Since yarn's global bin creating procedure is still problematic (Globally installed binaries do not work in PowerShell after 1.13.0 yarnpkg/yarn#6902, fixed by Disable creation of cmdShim PowerShell shims because they don't work and cause problems yarnpkg/yarn#6954), The .bin folder in global\node_modules is a better path to add to env, and this can avoid the annoying problem when you install scoop in some place except C: (that the shims in global bin have wrong relative path pointer).
• If you install yarn via scoop install yarn, the Yarn folder in $env:LOCALAPPDATA is useless, and when you uninstall yarn, the .yarnrc is unused, so the manifest add uninstaller.script to remove them when you uninstall.
• For reconfiguration, please use scoop update yarn -f instead of scoop reset yarn.

Should close #2969.