1. Added .clang-format file which contains information for the
clang-format tool on how to format source files
2. Added shell helper script to apply all changes on HAL soures,
test sources and primary sources
The shell script was not applied yet. This should be done shortly
before introducing the release. Also, it might be good idea to provide
instructions on how to set up the formatter for Eclipse
This PR refactores the tests so they are built as part of the FSFW.
This is done by adding Catch2 with the FetchContent directive.
A future implementation might also use a system installation of Catch2
by first checking whether Catch2 can already be found as a package
The custom configuration folder testcfg was moved from the user folder
to the actual unittest folder.
The tests can be built by setting the CMake FSFW_BUILD_UNITTESTS option
to TRUE/ON. They are built with the static library and dropped inside
the build folders fsfw directory.
