Apply cmake-format to CMake files
To improve our code styling we require the usage of clang-format on our code.
The CMake files need formatting too. For that cmake-format exists.
It was applied already once in the past by me with some configuration and additional manual changes on Disman with disman@2790ce26. Because some manual changes were prepared cmake-format was not enforced in the CI.
For Wrapland we want to also at least initially apply cmake-format once and if possible also integrate it now in our CI.