Add GitHub Action: ShiftLeft NextGen Static Analysis

[f8al]

This pull request adds a GitHub Action workflow file that executes ShiftLeft CORE's NextGen Static Application Security Testing (NG SAST) on this PR. Once merged, it will also execute NG SAST on all future PRs opened in this repository.

Visit shiftleft.io to see the security findings for this repository.

We've done a few things on your behalf

• Created a new branch and opened this pull request
• Generated a unique secret SHIFTLEFT_ACCESS_TOKEN to allow GitHub Actions in this repository to communicate with the ShiftLeft API
• Created a GitHub Action that will send this pull request to ShiftLeft for analysis
• Added a status check that displays the result of the GitHub Action

Questions? Comments? Want to learn more? Get in touch with us or check out our documentation.