Add DisplayVersion to Windows UninstallKey

[charlygott]

PR Description

Adds the DisplayVersion value to the uninstallation-string of the Windows NSIS installer.
The DisplayVersion can be used as a comparison operator for patch management in enterprise environments.

PR Checklist

• CHANGELOG.md updated

[CLAassistant]

All committers have signed the CLA.

[wildum]

lgtm, ping windows expert @mattdurham @jkroepke, any concerns about this?

[jkroepke]

lgtm, ping windows expert @mattdurham @jkroepke, any concerns about this?

windows exporter is using MSI installer which brings that out of the box. No idea here.

[mattdurham]

One day we will switch to MSI, likely makes things better. This feels reasonable.

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