add new endpoint for listing extension cache data

Author: JohnDuprey

Modules/CIPPCore/Public/Entrypoints/HTTP Functions/CIPP/Core/Invoke-ListExtensionCacheData.ps1

@@ -0,0 +1,45 @@
+function Invoke-ListExtensionCacheData {
+    <#
+    .SYNOPSIS
+        List Extension Cache Data
+    .DESCRIPTION
+        This function is used to list the extension cache data.
+    .FUNCTIONALITY
+        Entrypoint
+    .ROLE
+        CIPP.Core.Read
+    #>
+    [CmdletBinding()]
+    param($Request, $TriggerMetadata)
+
+    $APIName = $Request.Params.CIPPEndpoint
+    $Headers = $Request.Headers
+    Write-LogMessage -headers $Headers -API $APIName -message 'Accessed this API' -Sev 'Debug'
+
+    $TenantFilter = $Request.Query.tenantFilter ?? $Request.Body.tenantFilter
+    $DataTypes = $Request.Query.dataTypes -split ',' ?? $Request.Body.dataTypes ?? 'All'
+
+    $Data = Get-ExtensionCacheData -TenantFilter $TenantFilter
+
+    if ($DataTypes -ne 'All') {
+        $Data = $Data | Select-Object $DataTypes
+    }
+
+    if (!$Data) {
+        $Results = @{}
+    }
+
+    $Body = @{
+        Results = $Data
+    }
+
+    $StatusCode = [HttpStatusCode]::OK
+
+    Push-OutputBinding -Name Response -Value ([HttpResponseContext]@{
+            StatusCode = $StatusCode
+            Body       = $Body | ConvertTo-Json -Compress -Depth 100
+            Headers    = @{
+                'Content-Type' = 'application/json'
+            }
+        })
+}