build(copy-dist): exit on any caught error to make sure copy-dist fails during CI if any error occurs

if we don't exit, it will just log the issue - however we *want* it to fail it there is an error, so that it doesn't continue in the CI

alternative would be to rethrow the error, but then we'd print the error into the logs twice :-)

closes https://github.com/TriliumNext/Notes/issues/1413

bin/copy-dist.ts

@@ -105,4 +105,5 @@ try {
 
 } catch(err) {
     console.error("Error during copy:", err)
+    process.exit(1)
 }