ci: Migrate CI scripts to CMake

ci/test/00_setup_env_native_fuzz.sh

@@ -15,7 +15,13 @@ export RUN_FUNCTIONAL_TESTS=false
 export RUN_FUZZ_TESTS=true
 export GOAL="install"
 export CI_CONTAINER_CAP="--cap-add SYS_PTRACE"  # If run with (ASan + LSan), the container needs access to ptrace (https://github.com/google/sanitizers/issues/764)
-export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer,address,undefined,float-divide-by-zero,integer \
-CC='clang-18 -ftrivial-auto-var-init=pattern' CXX='clang++-18 -ftrivial-auto-var-init=pattern'"
+export BITCOIN_CONFIG="\
+ -DBUILD_FOR_FUZZING=ON \
+ -DSANITIZERS=fuzzer,address,undefined,float-divide-by-zero,integer \
+ -DCMAKE_C_COMPILER=clang-18 \
+ -DCMAKE_CXX_COMPILER=clang++-18 \
+ -DCMAKE_C_FLAGS='-ftrivial-auto-var-init=pattern' \
+ -DCMAKE_CXX_FLAGS='-ftrivial-auto-var-init=pattern' \
+"
 export CCACHE_MAXSIZE=200M
 export LLVM_SYMBOLIZER_PATH="/usr/bin/llvm-symbolizer-18"