🩹[Patch] Replace attributes.txt with headers.ps1 (#87)

- Replace attributes.txt with headers.ps1, based on new design on for
PSModule framework.

Author: MariusStorhaug

src/GitHub/attributes.txt

@@ -0,0 +1,3 @@
+[Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSAvoidLongLines', '', Justification = 'Contains long links.')]
+[CmdletBinding()]
+param()