Benchmark 1brc challenge but with following simplified rules:

1. Instead of the full 1B rows, we operate only on 10M data rows located in data/measurements-10000000.txt
2. Just calculate the average temp for each city.

The output of the results should be sent to stdout with the following format for each city separated by newline:

city: averageTemp

1. Checkout repo
2. Create directory under submissions/<name_of_submission>
3. Write a run.sh wherein you call the time command on your code to run the calculation.
4. Send a pull request. Your code should generally be executable within a Docker ubuntu:22.04 container