Pack the test report resources into the extension vsix

[fwcd]

Usually, the individual test cases from the report can be expanded by clicking on them:

This does not work, however, when the user is offline.

OS: macOS 10.13.5
VSCode: 1.30.1
Test Runner Version: 0.12.0

[fwcd]

The reason for this might be (missing) remote script dependencies, since Code attempts to connect to bootstrapcdn.com, jquery.com and cloudflare.com when opening the report.

EDIT: Which is precisely the case:

https://github.com/Microsoft/vscode-java-test/blob/918095b3d617e270a851aa536443b2c6cfb7dfc5/resources/templates/report.pug#L8-L13

[jdneo]

@fwcd Thank you for the useful feedback. We will consider packing those resources into the extension vsix.