Refactor to use workspace folders

Signed-off-by: Sanjula Ganepola <sanjulagane@gmail.com>

src/views/githubLocalActionsTreeItem.ts

@@ -1,6 +1,8 @@
-import { MarkdownString, TreeItem } from "vscode";
+import { MarkdownString, TreeItem, WorkspaceFolder } from "vscode";
 
 export interface GithubLocalActionsTreeItem extends TreeItem {
+    workspaceFolder?: WorkspaceFolder;
+
     getChildren: () => GithubLocalActionsTreeItem[] | Promise<GithubLocalActionsTreeItem[]>;
 
     getToolTip?: () => Promise<MarkdownString | string | undefined>;