chore: add yaml issue template

[div5yesh]

create new yaml issue template to get detailed info on bugs.

Issue #, if available:

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[richardmcclellan]

Overall, I really like the "form" style that you are introducing here! Especially inserting the codeblock automatically that customers can just paste their code in will be nice, because customers often fail to do that on their own. This should certainly reduce the friction for customers a little bit.

The goal of the template should be to minimize the number of follow up questions that we need to ask the customer, but we also don't want to collect info that isn't usually relevant, since it will increase the length of the issue, and thus the time that it takes to triage issues during sprint planning or during on call. I suggested a couple ways to simplify / reduce the number of questions asked.

[richardmcclellan]

These two questions are asked on our existing bug template, and do sometimes result in useful context, so we should add them to this one:

• Any relevant guides or documentation you're referencing
• For CLI issues, include any relevant logs in ~/.amplify/logs/amplify-cli-.log

Also, as a part of this PR, please remove the old bug template, since we only need one.

[richardmcclellan]

🚀