Update Issue and PR templates with v1-rc status

[thedavidprice]

Copy for new Issues and PRs. Purpose:

• general status update
• set expectations
• communicate needs
• encourage next steps; this is not meant to be a blocker

Feedback?

---

The Redwood v1 release candidate has been published, and we're actively working toward a 1.0.0 GA. 🎯

Read @mojombo's post about what to expect, what this means for current priorities, and how to help:

• v1-rc Announcement: https://community.redwoodjs.com/t/what-the-1-0-release-candidate-phase-means-and-when-1-0-will-drop/2604
• v1-rc Priorities that need community help: https://redwoodjs.com/good-first-issue

New Issues and PRs are still welcome and helpful! 😀 If you're not sure whether this new one will be a v1 priority, then please go ahead and ask by submitting it. Or reach out via the community chat or forums:

• Discord Chat: https://discord.gg/jjSYEQd
• Discourse Forum: https://community.redwoodjs.com/

When you're ready to proceed, just delete this message.

[Tobbe]

Setting the right expectations is great, and I think you do that perfectly. But I do think we can be (even) more open for new issues/PRs.

Personally I think we could replace the entire second paragraphs with something like this:

New Issues and PRs are always welcome and helpful! 😀 We will look at them and prioritize as needed. If you need help faster than what we can provide here, you can try to reach out to the community chat or forums:

• Discord Chat: https://discord.gg/jjSYEQd
• Discourse Forum: https://community.redwoodjs.com/