Add supporting themes required for Lotusdocs

themes/twbs/bootstrap/scss/tests/sass-true/register.js

@@ -0,0 +1,14 @@
+'use strict'
+
+const path = require('node:path')
+
+const runnerPath = path.join(__dirname, 'runner').replace(/\\/g, '/')
+
+require.extensions['.scss'] = (module, filename) => {
+  const normalizedFilename = filename.replace(/\\/g, '/')
+
+  return module._compile(`
+    const runner = require('${runnerPath}')
+    runner('${normalizedFilename}', { describe, it })
+    `, filename)
+}