Proposed update to github action

[jingles]

Description

If the trufflehog action.yml had an output status, the user could programmatically determine whether the job exited due to a secret detection or some other problem. This can be helpful to prevent false alerting when (for example) the trufflehog docker image is temporarily unavailable and we exit with some status other than 183.

Preferred Solution

I've already done a simple version of this on my own and intend to submit a PR. basically, just use trap combined with an output variable.

Additional Context

Anyone else think this would be handy? I'll likely submit the PR either way 🤷‍♂️...thanks for reading!

[jingles]

I have a branch ready to go, but don't have access to push... how do I go about this? I signed the CLA... thanks

[jingles]

@skeweredlogic noticed you were active on the actions side of things, would appreciate your thoughts. thanks