Add Toggle Switch Behaviour to Package deployer to aid more granular behaviour

[markcunninghamuk]

Is your feature request related to a problem? Please describe

Add feature flags to assist when you want more granular releases. For example option to skip word templates for certain maintenance scenarios

[ewingjm]

So I guess for starters we'll probably want skipWordTemplatesImport and skipDataImport?

[ewingjm]

or maybe it would be better if we added the option to explicitly include some data imports?

[tdashworth]

That seems like a good start. Are you thinking of using the new Settings getter?

[ewingjm]

That's what I was thinking! But there might be a better way of tackling this one. @ksulikow would specifying which data imports to run do the trick? Or are we going to need something smarter? Maybe we can add data packages to the import that run when upgrading from certain solution versions and (optionally) to certain solution versions?