Add a maintenance script that updates the CodeQL CLI dependency
YAML files and CodeQlQueries.qls together.
The script refreshes the CLI version, release digests, and cpp query
pack pin from the GitHub release metadata and the corresponding
qlpack.yml in the CodeQL CLI release branch.
Add comments to the CodeQL CLI dependency YAML files that direct
maintainers to use the script for future version updates.
Signed-off-by: Mingjie Shen <shen497@purdue.edu>