Introduce script to save test results in files according to platform (savetest.sh)

Test results are supposed to be added to releases

test/savetest.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+savetest() {
+  local target_file=
+  readonly savetest_dir="$(cd "$(dirname -- "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+
+  target_dir="${savetest_dir}/results"
+  mkdir -p "${target_dir}"
+
+  target_file="${target_dir}/$("${savetest_dir}/getenv.sh")_result.log"
+
+  "${savetest_dir}/test_rdlink.sh" >"${target_file}" 2>&1
+}
+
+savetest