Added contributing doc (#2)

add contributing doc

CONTRIBUTING.md

@@ -0,0 +1,34 @@
+# Contribution Guidelines
+This document aims to outline the requirements for the various forms of contribution for this project.
+
+**ALL** contributions are subject to review via pull request
+
+## Pull requests
+1) Ensure the "base repository" is set to "RedHatGov/product-demos" since this is a fork it defaults to it's parent "ansible/product-demos".
+
+## New playbooks
+1) Create a new branch based on main
+2) Add your playbook to the appropriate OS/System subdirectory
+3) Make any changes needed to match the existing standards in the direcotory.
+   1) Ex: Parameterized hosts
+   ```ansible
+   hosts: "{{ HOSTS | default('windows') }}"
+   ```
+4) Create an entry for your playbook in your subdirectories setup.yml
+   1) You can copy paste an existing one and edit it.
+   2) Ensure you edit the name, playbook path, survey etc.
+5) Add any needed roles/collections to the [requirements.yml](/collections/requirements.yml)
+6) Test via RHPDS, specify your branch name within the project configuration.
+
+## New OS/Systems
+1) Create a new subdirectory with no spaces
+2) Create a new setup.yml copying appropriate elements from another
+   1) These should all be mostly the same at the top
+    ```ansible
+    ---
+    controller_components:
+    - job_templates
+
+    controller_templates:
+    ...
+    ```