Upload the VS Installer log

[Steelskin]

Rather than dumping the log to the bot output, the log file is now uploaded as an artifact named after the job name.

[Steelskin]

@compnerd Here, I am uploading the log file unconditionally because I figured it might be handy to have successful logs on hand to compare with the bad ones. This is why we need a prefix to differentiate between the different jobs and matrices. Unfortunately, GitHub does not provide an easy API to get a unique job ID.

Let me know if you'd rather we only upload on failure.

[compnerd]

${{ github.job }} should get you the name of the job itself. However, I think that it is better if we just limit to uploading on failure.

[Steelskin]

${{ github.job }} should get you the name of the job itself. However, I think that it is better if we just limit to uploading on failure.

The problem with ${{ github.job }} is that it does not provide a unique name with matrix jobs. I have changed this to only upload on failure.