Specify issue Template

[jpike88]

This allows the issue created to have a pre-deployment checklist and other notes which can be made before approval is made, which helps establish a proper process

[trstringer]

That's a great idea! Adding to the backlog.

[jpike88]

I don't know go, maybe I'll get some time to learn it so I can actually contribute.

But I'm guessing this is where to start:

https://github.com/trstringer/manual-approval/blob/3f2b3dd8663dad502ee7386879737fb2c39875f9/approval.go#L46

• Concatenate the default strings as normal.
• Check current commit for file called .manual-approval/template.md, OR provide an argument called issue-template which allows users to specify path of a markdown file
• If file exists, add a line (----) or something under the default strings, with the template.