refactor(backend): Changed folder structure for learning content services.

backend/src/services/learning-paths/learning-path-provider.ts

@@ -0,0 +1,16 @@
+import {LearningPath, LearningPathResponse} from "../../interfaces/learning-content";
+
+/**
+ * Generic interface for a service which provides access to learning paths from a data source.
+ */
+export interface LearningPathProvider {
+    /**
+     * Fetch the learning paths with the given hruids from the data source.
+     */
+    fetchLearningPaths(hruids: string[], language: string, source: string): Promise<LearningPathResponse>;
+
+    /**
+     * Search learning paths in the data source using the given search string.
+     */
+    searchLearningPaths(query: string, language: string): Promise<LearningPath[]>;
+}