Add TARGET_USERNAME variable to define username on target distro. Layer can be now used by others also.

libsailfishkeyprovider: Only compile the lib to reduce the amount of weird linking errors (eg: with tests)

systemd: No longer provide firmwares to the kernel. //!\ This currently breaks every port of AsteroidOS /!\ /!\

android-tools: Let the 'Allow adbd to be ran as root' patch and android-tools-adbd.service files be provided my meta-openembedded

user services: Rework the way ceres services are launched in a cleaner systemd-wide way. This also makes those recipes less asteroid-spcecific for systems with a different username.

abootimg/mkboot/mkbootimg classes: Use the newer KERNEL_IMAGE_NAME instead of KERNEL_IMAGE_BASE_NAME and KERNEL_IMAGE_LINK_NAME instead of KERNEL_IMAGE_SYMLINK_NAME on thud

nemo-qml-plugin-systemsettins: Provide /etc/location/location.conf instead of geoclue-provider-hybris

qtwayland: Rewrite a patch to force the generation of private wayland extension headers before compiling QtCompositor. This is necessary since Qt 5.11.2

packagegroup-qt5-toolchain-target: Remove a dependency to qtcharts-mkspec which is not packaged by the qtcharts recipe

libhybris: Update the applied patch to match the latest upstream commit which is used by the current meta-smartphone

qtwayland: Re-implement QWaylandExtendedSurface, removed from 5.11 and needed by lipstick to access clients' Qt::WindowOverridesSystemGestures, eventually needed by qml-asteroid's LayerStack

recipes-asteroid/*: Make an explicit dependency to qtdeclarative-native to provide the necessary tools to compile qml. Mandatory since Qt 5.11