Also expose SourceCode in eslint shim

Author: FloEdelmann

docs/.vitepress/build-system/src/eslint.mjs

@@ -1,5 +1,8 @@
 // @ts-nocheck
-import * as all from '../../../../node_modules/eslint/lib/linter/linter.js'
-const Linter = all.Linter
-export { Linter }
-export default { Linter }
+/* eslint-disable unicorn/prefer-export-from -- exporting as named and default is less duplication without `export…from` */
+
+import { Linter } from '../../../../node_modules/eslint/lib/linter/linter.js'
+import SourceCode from '../../../../node_modules/eslint/lib/source-code/source-code.js'
+
+export { Linter, SourceCode }
+export default { Linter, SourceCode }