Generate project.json in %TEMP% rather than in install location
Generate project.json in %TEMP% rather than in install location

With this change we generate the project.json in %temp%\<guid> and
restore/publish from this directory into the final install directory. This
avoids having the project.json in the final install directory.

Microsoft/MIEngine,Microsoft/MIEngine,edumunoz/MIEngine,Microsoft/MIEngine,pieandcakes/MIEngine,faxue-msft/MIEngine,orbitcowboy/MIEngine,rajkumar42/MIEngine,csiusers/MIEngine,csiusers/MIEngine,faxue-msft/MIEngine,pieandcakes/MIEngine,csiusers/MIEngine,pieandcakes/MIEngine,Microsoft/MIEngine,rajkumar42/MIEngine,csiusers/MIEngine,pieandcakes/MIEngine,edumunoz/MIEngine,faxue-msft/MIEngine,chuckries/MIEngine,faxue-msft/MIEngine,edumunoz/MIEngine,rajkumar42/MIEngine,chuckries/MIEngine,rajkumar42/MIEngine,orbitcowboy/MIEngine,chuckries/MIEngine,edumunoz/MIEngine,orbitcowboy/MIEngine,orbitcowboy/MIEngine,chuckries/MIEngine