add feature and PR template

.github/issue_templates/bug.yml

@@ -1,8 +1,17 @@
-name: Report a bug
+name: Report unexpected behaviour
 description: If you came across something unexpected, let us know here!
 labels: [bug, pending]
 
 body:
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Has this already been reported?
+      description: If you haven't already, please look other existing issues to see if this bug has already been reported.
+      options:
+        - label: This is a new bug!
+          required: true
+
   - type: textarea
     id: expected-behaviour
     attributes:

.github/issue_templates/feature.yml

@@ -0,0 +1,21 @@
+name: Request a new feature or improvement
+description: If you have a suggestion for something that might improve feud, let us know here!
+labels: [feature, pending]
+
+body:
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Does this suggestion already exist?
+      description: If you haven't already, please look through the documentation and other existing issues to see if this feature is already implemented.
+      options:
+        - label: This is a new feature!
+          required: true
+
+  - type: textarea
+    id: expected-behaviour
+    attributes:
+      label: Feature description
+      description: Please describe the new feature or improvement that you would like.
+    validations:
+      required: true

.github/pull_request_template.md

@@ -0,0 +1,13 @@
+## Description
+
+<!-- If your pull request fixes an existing issue (e.g. #xxx), mention "Fixes #xxx" here. -->
+
+<!-- Please describe the purpose of the pull request. -->
+<!-- Provide thorough details about what you changed and why. -->
+
+## Checklist
+
+- [ ] I have added new tests (if necessary).
+- [ ] I have ensured that tests and coverage are passing on CI.
+- [ ] I have updated any relevant documentation (if necessary).
+- [ ] I have used a descriptive pull request title.