chore(github): Everyone gets to vote [skip ci]

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -41,3 +41,18 @@ body:
           required: true
         - label: I will fill out all of the requested information in this form.
           required: true
+
+  - type: "textarea"
+    id: "prioritisation"
+    attributes:
+      label: "Is this issue important to you?"
+      description: |
+        **Please do not modify this text area!**
+
+        This template let users to vote with a :+1: reaction if they find it important.
+        This is not a guarantee that highly-requested issues will be fixed first, but it helps us to figure out what's important to users. Please react on other users' issues if you find them important.
+      value: |
+        Add a :+1: [reaction] to [issues you find important].
+
+        [reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
+        [issues you find important]: https://github.com/null2264/yokai/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/ISSUE_TEMPLATE/issue_report.yml

@@ -106,3 +106,18 @@ body:
           required: true
         - label: I have filled out all of the requested information in this form.
           required: true
+
+  - type: "textarea"
+    id: "prioritisation"
+    attributes:
+      label: "Is this issue important to you?"
+      description: |
+        **Please do not modify this text area!**
+
+        This template let users to vote with a :+1: reaction if they find it important.
+        This is not a guarantee that highly-requested issues will be fixed first, but it helps us to figure out what's important to users. Please react on other users' issues if you find them important.
+      value: |
+        Add a :+1: [reaction] to [issues you find important].
+
+        [reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
+        [issues you find important]: https://github.com/null2264/yokai/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,11 @@
+
+<!--
+^ Please summarise the changes you have made here ^
+-->
+
+---
+
+Add a :+1: [reaction] to [pull requests you find important].
+
+[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
+[pull requests you find important]: https://github.com/null2264/yokai/pulls?q=is%3Aopen+sort%3Areactions-%2B1-desc