Provide twiggy.loaderPaths for custom namespaces #53
Description
This would become a workaround for unsupported frameworks, for example:
Drupal: #2 (comment)
Themosis Framework: #47
Vanilla Twig: #52 (comment)
Twing, Twig.js: Chaxwell/vscode-extension-twigLinkResolver#6 (comment)