First pass at using cdk tf

Cdktfdotnet1.cs

 class Program
    {
        public static void Main(string[] args)
        {
            App app = new App();
            MyStack stack = new MyStack(app, "datafactory");
            new LocalBackend(stack);
            app.Synth();
        }
    }

    public class MyStack : TerraformStack
    {
        public MyStack(Construct scope, string id) : base(scope, id)
        {
            var azurermProviderConfig = new AzurermProviderConfig() { Features = new AzurermProviderFeatures() };

            var azurermProvider = new AzurermProvider(this, "AzureRm", azurermProviderConfig);

            ResourceGroup rg = new ResourceGroup(this, "hibri-test", new ResourceGroupConfig
            {
                Location = "uksouth",
                Name = "hibri-test"
            });

            var storageAccountConfig = new StorageAccountConfig
            {
                Name = "hibrifuncstr",
                ResourceGroupName = rg.Name,
                Location = rg.Location,
                AccountReplicationType = "LRS",
                AccountTier = "Standard"


            };
            var functionStorageAccount = new StorageAccount(this, "hibrifuncstr", storageAccountConfig);

            var appServicePlanConfig = new ServicePlanConfig
            {
                Name = "test-plan",
                ResourceGroupName = rg.Name,
                Location = rg.Location,
                OsType = "Linux",
                SkuName = "B1"
            };
            var appServicePlan = new ServicePlan(this, "test-plan", appServicePlanConfig);
            var functionAppConfig = new LinuxFunctionAppConfig
            {
                Name = "hibrifuncapp",
                ResourceGroupName = rg.Name,
                Location = rg.Location,
                ServicePlanId = appServicePlan.Id,
                AppSettings = new Dictionary<string, string>(),
                StorageAccountName = functionStorageAccount.Name,
                StorageAccountAccessKey = functionStorageAccount.SecondaryAccessKey,
                SiteConfig = new LinuxFunctionAppSiteConfig
                {
                    ApplicationStack = new LinuxFunctionAppSiteConfigApplicationStack
                    {
                        DotnetVersion = "6.0"
                    }
                    
                }
            };
            var functionApp = new LinuxFunctionApp(this, "functionapp", functionAppConfig);

        }
    }