feat: mark prebuilds as such and set their preset ids (#16965)

This pull request closes https://github.com/coder/internal/issues/513

coderd/workspacebuilds.go

@@ -337,7 +337,8 @@ func (api *API) postWorkspaceBuilds(rw http.ResponseWriter, r *http.Request) {
 		Initiator(apiKey.UserID).
 		RichParameterValues(createBuild.RichParameterValues).
 		LogLevel(string(createBuild.LogLevel)).
-		DeploymentValues(api.Options.DeploymentValues)
+		DeploymentValues(api.Options.DeploymentValues).
+		TemplateVersionPresetID(createBuild.TemplateVersionPresetID)
 
 	var (
 		previousWorkspaceBuild database.WorkspaceBuild
@@ -1065,6 +1066,11 @@ func (api *API) convertWorkspaceBuild(
 		return apiResources[i].Name < apiResources[j].Name
 	})
 
+	var presetID *uuid.UUID
+	if build.TemplateVersionPresetID.Valid {
+		presetID = &build.TemplateVersionPresetID.UUID
+	}
+
 	apiJob := convertProvisionerJob(job)
 	transition := codersdk.WorkspaceTransition(build.Transition)
 	return codersdk.WorkspaceBuild{
@@ -1090,6 +1096,7 @@ func (api *API) convertWorkspaceBuild(
 		Status:                  codersdk.ConvertWorkspaceStatus(apiJob.Status, transition),
 		DailyCost:               build.DailyCost,
 		MatchedProvisioners:     &matchedProvisioners,
+		TemplateVersionPresetID: presetID,
 	}, nil
 }