Add Dockerfile and devcontainer configuration for Go development environment

.devcontainer/Dockerfile

@@ -0,0 +1,7 @@
+FROM mcr.microsoft.com/devcontainers/go:1.24-bookworm
+
+# Install helm and kubectl
+RUN curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
+RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" \
+    && chmod +x ./kubectl \
+    && sudo mv ./kubectl /usr/local/bin/kubectl

.devcontainer/devcontainer.json

@@ -0,0 +1,19 @@
+{
+	"name": "go:1.24-bookworm",
+	"dockerFile": "Dockerfile",
+    "runArgs": ["--privileged"],
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-kubernetes-tools.vscode-kubernetes-tools",
+				"redhat.vscode-yaml",
+				"Tim-Koehler.helm-intellisense",
+				"ms-vscode.azurecli",
+				"ms-vscode-remote.remote-containers",
+				"GitHub.copilot",
+				"fabiospampinato.vscode-diff",
+				"ms-azuretools.vscode-docker"
+			]
+		}
+	}
+}