add psconfeu draft demo

Author: SteveL-MSFT

dsc/examples/PSConfEU_2024_Demo.md

@@ -0,0 +1,61 @@
+# PSConfEU 2024 Demos
+
+## DSC Command-line
+
+### List DSC resources
+
+- List DSC resources
+
+```powershell
+dsc resource list
+```
+
+- List PowerShell Adapted DSC resources
+
+```powershell
+dsc resource list --adapter Microsoft.DSC/PowerShell
+```
+
+- Find DSC resources
+
+```powershell
+dsc resource list '*DSC*'
+```
+
+### DSC Resource Invocation
+
+- Invoke OSInfo DSC resource
+
+```powershell
+dsc resource get -r Microsoft/osinfo
+```
+
+### Output formats
+
+### Tracing
+
+### WhatIf
+
+## DSC Resources
+
+### Resource Manifest
+
+### Resource Types
+
+## DSC Configuration
+
+### ARM Template-like
+
+- JSON vs YAML
+
+### Expressions
+
+- Reference
+
+### Parameters
+
+- Secure paramters
+
+### Metadata
+
+- securityContext