clang format all .c and .h files

[jmayclin]

Problem:

Not all files are clang formatted. The missed files seem to be

        modified:   codebuild/bin/s2n_dynamic_load_test.c
        modified:   tests/LD_PRELOAD/allocator_overrides.c
        modified:   tests/benchmark/utils/shared_info.h
        modified:   tests/cbmc/*
        modified:   tests/ctverif/*
        modified:   tests/features/*
        modified:   tests/fuzz/*
        modified:   tests/s2n_test.h
        modified:   tests/sidetrail/*
        modified:   tests/viz/s2n_state_machine_viz.c

Solution:

find . -type f \( -name "*.c" -o -name "*.h" \) -exec clang-format -i {} \;

However, the standard seems to be that s2n-tls will manually review all clang-format based changes. With the 243 non-clang formatted files, that would take quite a long time to review. I'm generally comfortable with automated contributions/tooling, but if we don't want to do that then this will need to be split into multiple PRs.

Requirements / Acceptance Criteria:

All .c and .h files must be clang formatted.

Out of scope:

Nothing is out of scope. All .c. and .h files in the repo must be clang formatted.