add readme for built in resource type section

04-built-in-resource-types/README.md

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+# Built-In Resource Types
+
+Kubernetes provides many resource types that cover many application deployment/operational needs.
+
+This sections covers most of these resource types with working examples for each.
+
+## How to use this section
+
+Each directory represents a resource type and has a Taskfile containing all necessary commands.
+
+The tasks are prefixed with numbers to indicate the proper order to run them in.
+
+Each set of examples are deployed into their own namespace. This helps prevent naming conflicts and makes it easier to clean up (because deleting a namesapce deletes the resources within it)
+
+```
+task 01-create-namespace
+
+### OTHER TASKS
+
+task 07-delete-namespace
+```
+
+## Resource Types
+
+- **Namespace**: Provides a way to divide cluster resources between multiple users.
+- **Pod**: The smallest and simplest Kubernetes object. Represents a set of running containers on your cluster.
+- **ReplicaSet**: Ensures that a specified number of pod replicas are running at any given time.
+- **Deployment**: Manages stateless applications, providing features such as rolling updates and rollbacks.
+- **Service**: Defines a logical set of pods and a policy by which to access them.
+- **Job**: Creates one or more pods that run to completion.
+- **CronJob**: Schedules jobs to run at specified times or intervals.
+- **DaemonSet**: Ensures that a copy of a pod runs on all (or some) nodes in the cluster.
+- **StatefulSet**: Manages stateful applications, providing guarantees about the ordering and uniqueness of pods.
+- **ConfigMap**: Store configuration data that can be consumed by pods.
+- **Secret**: Manages sensitive information, such as passwords, OAuth tokens, and ssh keys.
+- **Ingress**: Manages external access to the services in a cluster, typically HTTP.
+- **GatewayAPI**: Manages traffic routing within the cluster, providing advanced routing capabilities.
+- **PersistentVolume and PersistentVolumeClaim**: Manages persistent storage for pods.
+- **RBAC (Role-Based Access Control)**: Manages permissions within the cluster.
+
+### Out of Scope Resource Types
+
+- **LimitRange**: Specifies resource constraints for resources within a namespace.
+- **NetworkPolicy**: Controls the network traffic flow at the IP address or port level within the Kubernetes cluster.
+- **MutatingWebhookConfiguration**: Defines webhooks that can mutate incoming requests to the Kubernetes API server.
+- **ValidatingWebhookConfiguration**: Defines webhooks that can validate incoming requests to the Kubernetes API server.
+- **HorizontalPodAutoscaler**: Automatically scales the number of pods in a deployment or replica set based on observed CPU utilization or other custom metrics.
+- **CustomResourceDefinition**: Allows users to define their own resource types and make the Kubernetes API server handle them (covered in a later section!).