Integrate with GitHub Security tab

Motivation

Having the security scan action integrated with GitHub's security tab will give security issues found by the scan more visibility, and let maintainers deal with security advisories and fixes all in the same place instead of having a split between regular issues and advisories that could come from other actions integrated with the Security tab.

Workflow example

name: Security audit
on:
  push:
    paths: 
      - '**/Cargo.toml'
      - '**/Cargo.lock'
jobs:
  security_audit:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
      - uses: actions-rs/audit-check@v1
        with:
          sarif-report: results.sarif
          token: ${{ secrets.GITHUB_TOKEN }}
      - name: Upload SARIF file
        uses: github/codeql-action/upload-sarif@v1
        with:
          sarif_file: results.sarif

Additional context

GitHub offers an action to upload SARIF reports that should make implementing this feature easier: https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/uploading-a-sarif-file-to-github

SARIF is stands for Static Analysis Results Interchange Format and is a standard, JSON-based format for the output of static analysis tools. For a quick introduction you can read this: https://github.com/microsoft/sarif-tutorials/blob/main/docs/1-Introduction.md

actions-rs / audit-check