chore: add issue templates for contributions and bugs

.github/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,34 @@
+name: Bug Report
+description: Report something that's broken
+labels: ["bug"]
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: What happened?
+      description: Be specific. Include error messages if any.
+    validations:
+      required: true
+
+  - type: textarea
+    id: repro
+    attributes:
+      label: Steps to reproduce
+      description: Minimal steps to trigger the bug.
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+    validations:
+      required: false
+
+  - type: input
+    id: version
+    attributes:
+      label: Version
+      description: e.g. 0.49.0
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Questions
+    url: https://discord.gg/XdVrgtQAzd
+    about: Ask questions on Discord instead of opening an issue

.github/ISSUE_TEMPLATE/contribution.yml

@@ -0,0 +1,34 @@
+name: Contribution Proposal
+description: Propose a change or feature (required for new contributors before submitting a PR)
+labels: []
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **Before you start:** Read [CONTRIBUTING.md](https://github.com/badlogic/pi-mono/blob/main/CONTRIBUTING.md).
+        
+        Keep this short. If it doesn't fit on one screen, it's too long. Write in your own voice.
+
+  - type: textarea
+    id: what
+    attributes:
+      label: What do you want to change?
+      description: Be specific and concise.
+    validations:
+      required: true
+
+  - type: textarea
+    id: why
+    attributes:
+      label: Why?
+      description: What problem does this solve?
+    validations:
+      required: true
+
+  - type: textarea
+    id: how
+    attributes:
+      label: How? (optional)
+      description: Brief technical approach if you have one in mind.
+    validations:
+      required: false