Add PR templates, CI workflows, and release drafter config files

.github/pull_request_template.md

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+## What does this PR do?
+
+<!-- A clear and concise description of the change -->
+
+## Commits
+
+<!-- Populated automatically by CI — do not edit this section -->
+
+## Type of change
+
+<!-- Add the matching label to this PR -->
+
+- [ ] 🚀 Feature / Enhancement (`feature`, `enhancement`)
+- [ ] 🐛 Bug Fix (`bug`, `fix`)
+- [ ] 🧪 Tests (`test`)
+- [ ] 🧹 Maintenance / Chore (`chore`, `dependencies`)
+- [ ] 📖 Documentation (`docs`)
+- [ ] 💥 Breaking Change (`breaking`)
+
+## How to test
+
+<!-- Steps to verify the change works as expected -->
+
+## Checklist
+
+- [ ] Tests pass (`php artisan test`)
+- [ ] Code style passes (`./vendor/bin/pint --test`)