Add repo states store index file

Author: charisk

extensions/ql-vscode/src/variant-analysis/repo-states-store/index.ts

@@ -0,0 +1 @@
+export * from "./repo-states-store";

extensions/ql-vscode/src/variant-analysis/variant-analysis-manager.ts

@@ -71,7 +71,7 @@ import {
   readRepoStates,
   REPO_STATES_FILENAME,
   writeRepoStates,
-} from "./repo-states-store/repo-states-store";
+} from "./repo-states-store";
 
 export class VariantAnalysisManager
   extends DisposableObject

extensions/ql-vscode/test/vscode-tests/activated-extension/variant-analysis/variant-analysis-manager.test.ts

@@ -48,7 +48,7 @@ import { mockedObject } from "../../utils/mocking.helpers";
 import {
   REPO_STATES_FILENAME,
   writeRepoStates,
-} from "../../../../src/variant-analysis/repo-states-store/repo-states-store";
+} from "../../../../src/variant-analysis/repo-states-store";
 
 // up to 3 minutes per test
 jest.setTimeout(3 * 60 * 1000);