message: Add scheme to path in `util/fs` methods
  This fixes a bug where .vimrc could not be found
diff: @@ -62,15 +62,17 @@ export const constants = {
  export async function existsAsync(path: string): Promise<boolean> {
  try {
  - await vscode.workspace.fs.stat(vscode.Uri.parse(path));
  + const uri = vscode.Uri.parse(`file:${path}`);
  + await vscode.workspace.fs.stat(uri);
  return true;
  } catch (_e) {
  return false;
  }
  }
  -export async function unlink(path): Promise<void> {
  - await vscode.workspace.fs.delete(vscode.Uri.parse(path));
  +export async function unlink(path: string): Promise<void> {
  + const uri = vscode.Uri.parse(`file:${path}`);
  + await vscode.workspace.fs.delete(uri);
  }
  export async function readFileAsync(path: string, encoding: string): Promise<string> {
  