Add a command line switch to install presets

[AxCoder]

We want to automate deployment of perfview to new machines. Currently presents installation reuires several clicks.

It would be very nice to have a way to automate it. For example like this:

PerfView.exe installPresets \\NetworkPath\folder\presets-for-out-cool-product.xml

[ilabutin]

Do you want this functionality to behave in the same was as the "Import" button works in the Manage Presets dialog?

[AxCoder]

Yes, exactly the same way.

[ilabutin]

OK. That should be easy to do. I'll look into this, but no promises time-wise :)

[brianrob]

This seems like a reasonable feature to me. I would recommend calling it something like "importPresets" to match the import/export wording used in the UI. @ilabutin, thanks for taking this.