Feat: send preparation time of a project

protocol.txt

@@ -169,6 +169,7 @@ Parameter as GET or POST:
     * job: Job ID
     * frame: Job's frame number
     * rendertime: Job's render time
+    * preptime: Job's preparation time
     * file: Frame to validate as form-data post
     * memoryused (optional): Max memory used for the render
     * cores (optional): Number of cores used from the render

src/main/java/com/sheepit/client/Client.java

@@ -936,7 +936,7 @@ import okhttp3.HttpUrl;
 	}
 
 	protected Error.Type confirmJob(Job ajob, int checkpoint) {
-		String url_real = String.format(LOCALE, "%s&rendertime=%d&memoryused=%s", ajob.getValidationUrl(), ajob.getProcessRender().getRenderDuration(),
+		String url_real = String.format(LOCALE, "%s&rendertime=%d&preptime=%d&memoryused=%s", ajob.getValidationUrl(), ajob.getProcessRender().getRenderDuration(), ajob.getProcessRender().getScenePrepDuration(),
 				ajob.getProcessRender().getPeakMemoryUsed());
 		if (ajob.getSpeedSamplesRendered() > 0.0) {
 			url_real +=  String.format(LOCALE, "&speedsamples=%s", ajob.getSpeedSamplesRendered());