github: bug report form and PR checklist

.github/pull_request_template.md

@@ -0,0 +1,10 @@
+# Pull request checklist
+
+- [ ] Host suite green: `make -C tests test`, `make -C tests asan`,
+      `ORBISRPC_STRICT_SECRETS=1 python3 tests/e2e_consumer.py` (paste outputs)
+- [ ] No Discord tokens or webhook URLs committed (e2e secret scan green)
+- [ ] Linkage set unchanged (`libkernel_web`, `libSceLibcInternal`,
+      `libSceNet`, `libSceSystemService` — never `libkernel.so`)
+- [ ] Docs updated if behavior changed (`README.md`, `docs/`)
+- [ ] `orbisrpc/` diff is empty unless this is a daemon change — daemon
+      changes need on-console proof (log lines, firmware tested)