Redirect questions and feature ideas to discussions

This should make common questions and feature ideas more discoverable and help coalesce discussion on them, which will reduce the amount of work I have to do answering common issues. Also added a bug issue template to encourage high quality bug reports.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: 🐛 Bug report
+about: Something isn't working as expected 🤔.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+What the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior.
+
+**Expected behavior**
+What you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Environment**
+- Fish: [e.g. 3.1.2]
+- fzf.fish: [e.g. 5.3]
+- plugin manager: [e.g. fisher 4.2.0]
+- terminal: [e.g. iTerm]
+- OS: [e.g. macOS 10.15.7]
+
+**Additional context**
+Anything else?

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name:  🙏 Ask a question
+    url: https://github.com/PatrickF1/fzf.fish/discussions/new?category=q-a
+    about: Get help with using the plugin
+  - name: 💡 Idea
+    url: https://github.com/PatrickF1/fzf.fish/discussions/new?category=ideas
+    about: Suggest a new feature or an improvement to existing features