Add GitHub PR import script, PR check workflow, issue templates

Co-Authored-By: Claude Code <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,33 @@
+name: Bug report
+description: Something isn't working as expected
+labels: [bug]
+body:
+  - type: textarea
+    id: what
+    attributes:
+      label: What happened?
+      description: What you did, what you expected, and what happened instead.
+    validations:
+      required: true
+  - type: input
+    id: version
+    attributes:
+      label: Noo version
+      description: Settings → About
+    validations:
+      required: true
+  - type: input
+    id: device
+    attributes:
+      label: Device and OS version
+    validations:
+      required: true
+  - type: input
+    id: server
+    attributes:
+      label: Nextcloud server version
+  - type: textarea
+    id: extra
+    attributes:
+      label: Screenshots or logs
+      description: Remove any personal data or server addresses you don't want public.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Security problem
+    url: https://github.com/ayushyamitabh/noo/blob/main/SECURITY.md
+    about: Please report security issues privately, not as public issues.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,22 @@
+name: Feature request
+description: Suggest an improvement
+labels: [enhancement]
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Noo aims to be a simple, just-works Nextcloud client with reasonable
+        customization, not a replacement for every Nextcloud feature. Requests
+        that fit that goal are most likely to be accepted.
+  - type: textarea
+    id: problem
+    attributes:
+      label: What problem are you trying to solve?
+    validations:
+      required: true
+  - type: textarea
+    id: idea
+    attributes:
+      label: What would you like to see?
+    validations:
+      required: true