Add an option to not create issues on failure

[romoh]

Motivation

When using audit-check on schedule, the action automatically creates an issue. However, given this is a security vulnerability it seems creating an issue is not a desired behavior. At least this should be optional through an input to the action.

Workflow example

     - uses: actions-rs/audit-check@v2`
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          create-issue: false

Additional context

N/A

[naftulikay]

I just created #217, which is a duplicate of this, so I will close.