Add CI scripts

This is a back forward port of the CI scripts from cdi-1.8.x together with several fixes that make the tests green.

Let's keep the develop green once this is merged.

@k202125 @jahns @m300433 FYI

.ci/bb/breeze-mpim/test.all.clang

+#!/bin/bash
+
+set -eu
+set -o pipefail
+
+script_dir=$(cd "$(dirname "$0")"; pwd)
+top_srcdir=$(cd "${script_dir}/../../.."; pwd)
+
+. "${script_dir}/utils.sh"
+init_clang1201
+
+# Check the formatting. Note that git-clang-format might keep redundant blank
+# lines. Therefore, we use clang-format:
+find src app \
+  -name '*.h' -o -name '*.hpp' -o -name '*.c' -o -name '*.cpp' | \
+    xargs -n 1 -P 8 clang-format --Werror --dry-run --verbose
+
+test -f "${top_srcdir}/configure" || "${top_srcdir}/autogen.sh"
+
+"${top_srcdir}/configure" \
+--disable-maintainer-mode \
+--enable-cf-interface \
+--enable-iso-c-interface \
+--enable-mpi \
+--enable-option-checking=fatal \
+--with-eccodes="${ECCODES_ROOT}" \
+--with-netcdf="${NETCDF_ROOT}" \
+CC="${MPICC}" \
+CPPFLAGS="-I${UUID_ROOT}/include" \
+FC="${MPIFC}" \
+F77="${MPIFC}" \
+LDFLAGS="-I${UUID_ROOT}/lib" \
+MPI_LAUNCH="${MPI_LAUNCH}" \
+PKG_CONFIG_PATH="${YAXT_ROOT}/lib/pkgconfig:${PPM_ROOT}/lib/pkgconfig"
+
+make -j8
+
+make -j8 check | tee tests/test-suite.log
+
+check_all_tests_passed tests/test-suite.log