feat: add RESOURCE_TAGS environment variable to azd down command

Author: mawasile

.github/workflows/azure-dev-down.yml

@@ -58,6 +58,8 @@ jobs:
           POWER_PLATFORM_TENANT_ID: ${{ vars.AZURE_TENANT_ID }}
           POWER_PLATFORM_USE_OIDC: "true"
 
+          RESOURCE_TAGS: ${{ vars.RESOURCE_TAGS }}
+
           ARM_USE_AZUREAD: "true"
           ARM_STORAGE_USE_AZUREAD: "true"
           ARM_USE_OIDC: "true"