feat: add show_local_video param

frontend/shared/InteractiveVideo.svelte

@@ -12,6 +12,7 @@
 	export let label: string | undefined = undefined;
 	export let show_label = true;
 	export let include_audio: boolean;
+	export let show_local_video: boolean;
 	export let i18n: I18nFormatter;
 	export let active_source: "webcam" | "upload" = "webcam";
 	export let handle_reset_value: () => void = () => {};
@@ -56,6 +57,7 @@
 	<Webcam
 		{rtc_configuration}
 		{include_audio}
+		{show_local_video}
 		{time_limit}
 		{track_constraints}
 		{mode}