Create custom vscode snippet for tests

[mvogelgesang]

Is your feature request related to a problem? Please describe.

The current process to generate new test case files is a bit cumbersome as it requires multiple steps and manual renaming of the resulting file. VSCode Snippets can reduce the complexity.

https://code.visualstudio.com/docs/editor/userdefinedsnippets

Describe the solution you'd like

• Snippet should scaffold a Jasmine test
• Insert filename as the top describe block

Describe alternatives you've considered

Additional context