feat(core): introduced lucene style search

ts/classes.collectionfactory.ts

@@ -0,0 +1,19 @@
+import * as plugins from './plugins.js';
+import { SmartdataCollection } from './classes.collection.js';
+import { SmartdataDb } from './classes.db.js';
+
+export class CollectionFactory {
+  public collections: { [key: string]: SmartdataCollection<any> } = {};
+
+  public getCollection = (nameArg: string, dbArg: SmartdataDb): SmartdataCollection<any> => {
+    if (!this.collections[nameArg]) {
+      this.collections[nameArg] = (() => {
+        if (dbArg instanceof SmartdataDb) {
+          // tslint:disable-next-line: no-string-literal
+          return new SmartdataCollection(nameArg, dbArg);
+        }
+      })();
+    }
+    return this.collections[nameArg];
+  };
+}