Fix deployment when using OpenAI (as opposed to AOAI) (microsoft#519)

### Motivation and Context
Using the deployment scripts or Deploy to Azure button is broken when
using an OpenAI account (as opposed to an AOAI one).

### Description
Create the proper settings in the bicep/ARM template

### Contribution Checklist
- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [Contribution
Guidelines](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations

scripts/deploy/main.bicep

@@ -78,7 +78,7 @@ param deploySpeechServices bool = true
 @description('Whether to deploy the web searcher plugin, which requires a Bing resource')
 param deployWebSearcherPlugin bool = false
 
-@description('Whether to deploy binary packages to the cloud')
+@description('Whether to deploy pre-built binary packages to the cloud')
 param deployPackages bool = true
 
 @description('Region for the resources')
@@ -385,6 +385,18 @@ resource appServiceWebConfig 'Microsoft.Web/sites/config@2022-09-01' = {
           name: 'SemanticMemory:Services:AzureOpenAIEmbedding:Deployment'
           value: embeddingModel
         }
+        {
+          name: 'SemanticMemory:Services:OpenAI:TextModel'
+          value: completionModel
+        }
+        {
+          name: 'SemanticMemory:Services:OpenAI:EmbeddingModel'
+          value: embeddingModel
+        }
+        {
+          name: 'SemanticMemory:Services:OpenAI:APIKey'
+          value: aiApiKey
+        }
         {
           name: 'Plugins:0:Name'
           value: 'Klarna Shopping'
@@ -568,6 +580,18 @@ resource appServiceMemoryPipelineConfig 'Microsoft.Web/sites/config@2022-09-01'
         name: 'SemanticMemory:Services:AzureFormRecognizer:APIKey'
         value: ocrAccount.listKeys().key1
       }
+      {
+        name: 'SemanticMemory:Services:OpenAI:TextModel'
+        value: completionModel
+      }
+      {
+        name: 'SemanticMemory:Services:OpenAI:EmbeddingModel'
+        value: embeddingModel
+      }
+      {
+        name: 'SemanticMemory:Services:OpenAI:APIKey'
+        value: aiApiKey
+      }
       {
         name: 'Logging:LogLevel:Default'
         value: 'Information'