Create default version endpoint on applications

Strategy:
- add an environmental variable injected during the ci/cd process
- add the stub endpoint to the application templates

GET /api/version

```json
{
"build": "63498f19146bae1a6ae7e354"
"tag": "v1.2.0"
}
```

Start by locating the application templates and the CI/CD configuration that injects environment variables. Add the default GET /api/version endpoint to the templates and verify that it returns the specified build and tag JSON values.

Written by the indexing model from the issue text.