Add simple getLive util

Author: vonagam

assets/js/live_svelte/index.js

@@ -1,2 +1,3 @@
 export {getRender} from "./render"
 export {getHooks} from "./hooks"
+export {getLive} from "./utils"

assets/js/live_svelte/types.d.ts

@@ -11,3 +11,4 @@ export type Live = {
 
 export declare const getHooks: (components: object) => object
 export declare const getRender: (components: object) => (name: string, props: object, slots: object) => any
+export declare const getLive: (getContext: (key: string) => any) => Live

assets/js/live_svelte/utils.js

@@ -9,3 +9,7 @@ export function normalizeComponents(components) {
     }
     return normalized
 }
+
+export function getLive(getContext) {
+    return getContext("live-svelte");
+}