feat(dual_stack_bug_report): add new issue template

.github/ISSUE_TEMPLATE/dual_stack_issue_report.md

@@ -0,0 +1,39 @@
+---
+name: Report a v2.0.0 Release Issue
+about: Create an issue report for the v2.0.0 release series or something related to dual-stack functionality
+title: '[v2.0.0 Issue]: '
+labels: bug, v2.0.0
+assignees: aauren
+---
+
+**What happened?**
+A clear and concise description of what the bug is.
+
+**What did you expect to happen?**
+A clear and concise description of what you expected to happen.
+
+**How can we reproduce the behavior you experienced?**
+Steps to reproduce the behavior:
+1. Step 1
+2. Step 2
+3. Step 3
+4. Step 4
+
+**Screenshots / Architecture Diagrams / Network Topologies**
+If applicable, add those here to help explain your problem.
+
+**System Information (please complete the following information):**
+ - Kube-Router Version (`kube-router --version`): [e.g. 2.0.0-rc1]
+ - Kube-Router Parameters: [e.g. --run-router --run-service-proxy --enable-overlay --overlay-type=full etc.]
+ - Kubernetes Version (`kubectl version`) : [e.g. 1.23.3]
+ - Cloud Type: [e.g. AWS, GCP, Azure, on premise]
+ - Kubernetes Deployment Type: [e.g. EKS, GKE, Kops, Kubeadm, etc.]
+ - Kube-Router Deployment Type: [e.g. DaemonSet, System Service]
+ - Cluster Size: [e.g. 200 Nodes]
+
+**Logs, other output, metrics**
+Please provide logs, other kind of output or observed metrics here.
+
+**Additional context**
+Add any other context about the problem here.
+