feat: vue upgrade monorepo support, --from option, and a new vue migrate --from command
#5091
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This PR contains several features, but they are all to solve the
vue upgradeusability problem in complex environments, so I put them into a single PR.getInstalledVersionfunction to use theloadModuleutility, this is to support monorepo.vue upgrade --fromoption can be used as an escape hatch if the user forgets or doesn't want to runnpm installbefore upgrading, or if evenloadModulefailed to locate the installed plugin.vue migrate --fromis for those who previously failed to runvue upgradeand then upgraded the plugin version anyway, they might still want to benefit from the automated migration script. Or, because we previously used^version range in the templates, users may have installed the latest plugin unintentionally; in this case, if they want to automatically migrate to the latest template setup, they can use this command.resolveFromoption is now respected in all these commands.TODO: these changes haven't been thoroughly tested yet.
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