Add corpus builder for config

Author: nathaniel-brough

gix-config/fuzz/fuzz_targets/fuzz_file_corpus_builder.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -eox pipefail
+
+CWD=$(pwd)
+
+ROOT=$1
+OUTPUT_CORPUS=$2
+FIXTURES_DIR=$(readlink -f $ROOT/gix-config/tests/fixtures)
+
+echo $ROOT
+echo $FIXTURES_DIR
+find $FIXTURES_DIR -name "*.config" -exec zip -j $OUTPUT_CORPUS {} \;
+
+# Generate configs.
+REPO=$(mktemp -d)
+cd $REPO
+bash $FIXTURES_DIR/make_config_repo.sh
+find . -name ".*" -exec zip $OUTPUT_CORPUS {} \;
+cd $CWD
+rm -r $REPO
+