URL for Github Enterprise

[kaykay88]

This is a pretty nice reusable github actions, great work 👏🏼

I think it would nice if it also supports custom Github URL as an input parameter. This feature will be very useful for GH enterprise users like me.

[solmatches]

I was wondering if there is any support plan for this feature?
I found the 'github-action-slack-notify-build' extremely useful previously and have adopted it in the new environment. However, the issue is that its base URL is 'github.com'.
It would be really great if support could be extended similar to what is offered at GitHub Enterprise Action for Slack.