Introduce a new GitHub workflow to run shellcheck on changed shell
scripts. This workflow automatically detect and highlight potential
shell script issues in pull requests. This change is a follow-up to
commit 0700b322 which fixed an undefined variable issue in `install.sh`.
It intends to leverage static analysis to improve script quality and
catch potential errors early.
Shellcheck will now:
- Analyze all shell scripts modified in pull requests
- Provide inline comments with specific issue details
- Help prevent similar variable-related mistakes in the future
See also
https://github.com/redhat-plumbers-in-action/differential-shellcheck
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closesscylladb/scylladb#21755
