chore: Add CVE template

In an attempt to reduce the ticket churn we see from third-party
detectors.

Signed-off-by: Pranshu Srivastava <[email protected]>

Author: rexagod

.github/ISSUE_TEMPLATE/cve_report.md

@@ -0,0 +1,30 @@
+---
+name: CVE report
+about: Report a CVE detected in kube-state-metrics main branch
+title: ''
+labels: kind/cve
+assignees: ''
+
+---
+
+<!-- Please use this template while reporting a CVE and provide as much info as possible. Not doing so may result in your bug not being addressed in a timely manner. Thanks!
+
+If the matter is proven to be security related, please disclose it privately see https://github.com/kubernetes/kube-state-metrics/blob/main/SECURITY.md
+
+NOTE: Only the CVEs that are in the Golang vulnerability database and actively affect code paths in KSM will be considered.
+-->
+
+<!-- `govulncheck` data should include the command ran and should clearly mention the CVE in question in the logs -->
+**`govulncheck` output**
+```
+
+```
+
+**Anything else we need to know?**
+
+**Environment**
+
+* kube-state-metrics version:
+* Kubernetes version (use `kubectl version`):
+* Cloud provider or hardware configuration:
+* Other info: