feat: add metallb application

manifests/metallb/app.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: metallb
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://metallb.github.io/metallb
+    chart: metallb
+    targetRevision: 0.14.9
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: metallb-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+    - CreateNamespace=true

manifests/metallb/ippool.yaml

@@ -0,0 +1,14 @@
+apiVersion: metallb.io/v1beta1
+kind: IPAddressPool
+metadata:
+  name: homelab
+  namespace: metallb-system
+spec:
+  addresses:
+  - 10.21.0.200-10.21.0.253
+---
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: homelab
+  namespace: metallb-system