Add createdDate parameter for deployment timestamp

Author: Harmanpreet-Microsoft

infra/main.bicep

@@ -136,7 +136,8 @@ var abbrs = loadJsonContent('./abbreviations.json')
 
 @description('Optional created by user name')
 param createdBy string = empty(deployer().userPrincipalName) ? '' : split(deployer().userPrincipalName, '@')[0]
-
+@description('Deployment UTC timestamp')
+param createdDate string ='yyyy-MM-ddTHH:mm:ssZ'
 // ========== Resource Group Tag ========== //
 resource resourceGroupTags 'Microsoft.Resources/tags@2021-04-01' = {
   name: 'default'
@@ -145,6 +146,7 @@ resource resourceGroupTags 'Microsoft.Resources/tags@2021-04-01' = {
       ...allTags
       TemplateName: 'Code Modernization'
       CreatedBy: createdBy
+      CreatedDate:createdDate
     }
   }
 }