Coroutine: create extension method to create childScope

libraries/core/src/main/kotlin/io/element/android/libraries/core/coroutine/ChildScopeOf.kt

@@ -23,11 +23,19 @@ import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.job
 import kotlinx.coroutines.plus
 
-fun childScopeOf(
-    parentScope: CoroutineScope,
+/**
+ * Create a child scope of the current scope.
+ * The child scope will be cancelled if the parent scope is cancelled.
+ * The child scope will be cancelled if an exception is thrown in the parent scope.
+ * The parent scope won't be cancelled when an exception is thrown in the child scope.
+ *
+ * @param dispatcher the dispatcher to use for this scope.
+ * @param name the name of the coroutine.
+ */
+fun CoroutineScope.childScope(
     dispatcher: CoroutineDispatcher,
     name: String,
 ): CoroutineScope = run {
-    val supervisorJob = SupervisorJob(parent = parentScope.coroutineContext.job)
-    parentScope + dispatcher + supervisorJob + CoroutineName(name)
+    val supervisorJob = SupervisorJob(parent = coroutineContext.job)
+    this + dispatcher + supervisorJob + CoroutineName(name)
 }