f951981a4c
Add `make` targets `devserver-webapp` and `devserver-website` to run respectively Yarn and Hugo. This also slightly changes how Hugo is invoked, from using the `hugo` CLI command to `go run github.com/gohugoio/hugo@v0.101.0`. This avoids the need to actually install Hugo locally, and also will use the correct version of Hugo if the locally-installed version happens to be different.