fix: format core filenames in core file imports

Author: mdevils

src/schema-to-typescript/common/client-core.ts

@@ -14,7 +14,7 @@ function processCoreFile(
     return renderTypeScript(
         parse(
             code.replace(
-                /import(.*?)from ".\/([^"]+)";/,
+                /import(.*?)from '.\/([^']+)';/,
                 (_, [imports, path]) =>
                     `import${imports}from ${JSON.stringify(`./${formatFilename(path, filenameFormat)}`)};`
             ),