Add CodeQL #158
Description
Add CodeQL workflow to detect any known code vulnerabilities in the cli codebase.
More about CodeQL - https://codeql.github.com/, https://docs.github.com/en/code-security/concepts/code-scanning/codeql/about-code-scanning-with-codeql
Official CodeQL GitHub Action - https://github.com/github/codeql-action
Example workflows - https://github.com/docker/cli/blob/master/.github/workflows/codeql.yml