Add umockdev_testbed_load_evemu_events_from_string() #1161

Job	Run time
OS (apt-docker.io/amd64/ubuntu:devel)	1m 31s
OS (apt-docker.io/amd64/ubuntu:latest)	1m 33s
OS (apt-docker.io/amd64/ubuntu:rolling)	1m 23s
OS (apt-docker.io/i386/debian:testing)	1m 51s
OS (apt-docker.io/amd64/debian:testing)	1m 32s
OS (dnf-registry.fedoraproject.org/fedora:latest)	1m 56s
OS (dnf-registry.fedoraproject.org/fedora:rawhide)	2m 3s
OS (alpine-docker.io/alpine)	32s
OS (alpine-docker.io/i386/alpine)	30s
OS ([email protected]/alpine)	29s
OS (nix-docker.io/nixos/nix)	1m 8s
OS (gentoo-)	22m 25s
OS (alpine@gudev-alpine, EXTRA_PACKAGES=libgudev-dev)	37s
	37m 30s

Provide feedback