network: Add multi-network repos

Author: mrbobbytables

sig-network/README.md

@@ -113,6 +113,10 @@ The following [subprojects][subproject-definition] are owned by sig-network:
 ### kube-dns
 - **Owners:**
   - [kubernetes/dns](https://github.com/kubernetes/dns/blob/master/OWNERS)
+### multi-network
+- **Owners:**
+  - [kubernetes-sigs/multi-network-api](https://github.com/kubernetes-sigs/multi-network-api/blob/main/OWNERS)
+  - [kubernetes-sigs/multi-network](https://github.com/kubernetes-sigs/multi-network/blob/main/OWNERS)
 ### network-policy
 - **Owners:**
   - [kubernetes-sigs/kube-network-policies](https://github.com/kubernetes-sigs/kube-network-policies/blob/master/OWNERS)

sigs.yaml

@@ -2274,6 +2274,10 @@ sigs:
   - name: kube-dns
     owners:
     - https://raw.githubusercontent.com/kubernetes/dns/master/OWNERS
+  - name: multi-network
+    owners:
+    - https://raw.githubusercontent.com/kubernetes-sigs/multi-network-api/main/OWNERS
+    - https://raw.githubusercontent.com/kubernetes-sigs/multi-network/main/OWNERS
   - name: network-policy
     contact:
       slack: sig-network-policy-api