this workflow checks the first 10 lines for
"LicenseRef-ScyllaDB-Source-Available-1.0" in newly introduced files
when a new pull request is created against "master" or "next".
if "LicenseRef-ScyllaDB-Source-Available-1.0" is not found, the
workflow fails. for the sake of simplicity, instead of parsing the
header for SPDX License ID, we just check to see if the
"LicenseRef-ScyllaDB-Source-Available-1.0" is included.
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#22065
