Merge pull request #69 from Azure/ai-hub-update300

adding AOAI function

utilities/New-AzOpenAIPrompt.ps1

@@ -0,0 +1,58 @@
+function New-AzOpenAIPrompt {
+    <#
+        Quick function to validate 1) access to Azure Open AI instance (GTP4), and 2) ability to generate a prompt.
+        Note: for this to work, the caller ID must have appropriate permissions to the Azure Open AI instance via data plane RBAC.
+        
+        .Synopsis
+        Prompt Azure Open AI using PowerShell function
+        .Example
+        New-AzOpenAIPrompt -Endpoint "foobar.openai.azure.com" -DeploymentName "gpt4" -Prompt "Why does it rain so much in Bergen, Norway?"
+    #>
+
+    [cmdletbinding()]
+    param (
+        [Parameter(Mandatory, ValueFromPipeline)]
+        [ValidateNotNullOrEmpty()]
+        [string] $Endpoint,
+
+        [Parameter(Mandatory)]
+        [ValidateNotNullOrEmpty()]
+        [string] $DeploymentName,
+
+        [Parameter(Mandatory)]
+        [ValidateNotNullOrEmpty()]
+        [string] $Prompt
+    )
+
+    # Get Token
+    $TokenRequest = Get-AzAccessToken -ResourceUrl "https://cognitiveservices.azure.com"
+    $MyToken = $TokenRequest.token
+
+$Body = @"
+{
+    "messages": [
+        {
+            "role": "system",
+            "content": "You are a helpful assistant."
+        },
+        {
+            "role": "user",
+            "content": "$($Prompt)"
+        }
+    ]
+}
+"@
+    # AI Request
+    $AzureOAIRequest = @{
+        Uri = "https://$($Endpoint)/openai/deployments/$($DeploymentName)/chat/completions?api-version=2023-08-01-preview"
+        Headers = @{
+            Authorization = "Bearer $($MyToken)"
+            'Content-Type' = 'application/json'
+            }
+        Method = 'POST'
+        Body = $Body
+        UseBasicParsing = $true
+        }
+    $Response = Invoke-WebRequest @AzureOAIRequest
+    [Newtonsoft.Json.Linq.JObject]::Parse($Response.Content).ToString()
+}