Add `secrets` block to workflows and support more workflow triggers

[Fcmam5]

Hi @npalm,

Thank you for this library! I was working on a similar tool then I found this action-docs which seems smarter than mine :)

I have a couple of suggestions, and I will be happy to implement them here:

• Support workflow_dispatch in addition to workflow_call
• Add secrets block for workflow_run parameters

[npalm]

Great to see you find this library. And love the open source mindset to work together.

Feel free to great PR's! Any improvement is welcome!