Hide hosted shells and schema analyzer if VNET, Firewall or Private endpoints is enabled (#826)

* Disable Schema Analyzer if VNET or Firewall is enabled

* Add support for private endpoint connections

* Fix lint warning

src/Common/DatabaseAccountUtility.ts

@@ -0,0 +1,17 @@
+import { userContext } from "../UserContext";
+
+function isVirtualNetworkFilterEnabled() {
+  return userContext.databaseAccount?.properties?.isVirtualNetworkFilterEnabled;
+}
+
+function isIpRulesEnabled() {
+  return userContext.databaseAccount?.properties?.ipRules?.length > 0;
+}
+
+function isPrivateEndpointConnectionsEnabled() {
+  return userContext.databaseAccount?.properties?.privateEndpointConnections?.length > 0;
+}
+
+export function isPublicInternetAccessAllowed(): boolean {
+  return !isVirtualNetworkFilterEnabled() && !isIpRulesEnabled() && !isPrivateEndpointConnectionsEnabled();
+}