refactor: adapt to nuspec requirement for gallery publishing

tools/PSConfluencePublisher.psm1

@@ -0,0 +1,35 @@
+#!/usr/bin/env pwsh
+<#
+    .SYNOPSIS
+        PowerShell Publisher for sphinxcontrib.confluencebuilder
+
+    .DESCRIPTION
+
+        - support for ancestral pages and containered attachments
+        - creates new pages if they don't exist
+        - updates existing pages and attachments if checksum mismatches
+
+    .EXAMPLE
+
+        Import-Module (Join-Path 'vendor' 'tiara.rodney' 
+                                 'PSConfluencePublisher'
+                                 'PSConfluencePublisher'
+                                 'PSConfluencePublisher.psd1')
+
+        Register-PersonalAccessToken `
+            -Host 'confluence.contoso.com' `
+            -Token '123456789123456789'
+
+        Test-Connection confluence.contoso.com
+
+        Publish-All `
+            -Url 'https://confluence.contoso.com/display/TIARA/Testitest' `
+            -DumpIndex build/docs/confluence.out/data.json
+
+    .NOTES
+        - tested with PowerShell Core (PSVersion 7.3.6)
+        - tested with PowerShell Desktop (PSVersion 5.1.19041.3031)
+#>
+$ErrorActionPreference = "Stop"
+
+