feat: add configuration for workspace trust (#1378)
feat: add configuration for workspace trust (#1378)

Our extension does not support untrusted workspaces because it executes
ngcc from `node_modules`.

See https://github.com/microsoft/vscode/issues/120251 for a description
of workspace trust and how to determine if an extension should support
untrusted workspaces.

Fixes #1322
angular/vscode-ng-language-service,angular/vscode-ng-language-service,angular/vscode-ng-language-service,angular/vscode-ng-language-service