add "are there alternatives available" to PR template

[adamdecaf]

I propose we add the following to the PR template questions:

Are there active projects which replicate the popular functionality of this project?

Currently the following questions are asked:

• Where is the project currently hosted?
• Is the project written only in Go, or does it contain other languages (beyond scripts)?
• Has the project had any recent activity?
• Does the project have a maintainer, or a maintainer looking for someone to take over the project?
• Do you have any example projects that make use of this package?
• Are there any outstanding critical bugs that result in the library being totally unusable or insecure?
• Is there anything else you'd like to mention about the project?

[theckman]

@adamdecaf would you be willing to raise a PR against this file? https://github.com/gofrs/help-requests/blob/master/.github/ISSUE_TEMPLATE

[adamdecaf]

For sure!