Convert currencies from financial statement using historical data.

It consists of two parts:

1. Fetching historical exchange rates from the previous year and stores them in a db.
2. Process financial statement and saves the output.

1. uv install
2. Set env variables:

export DATA_SOURCE=...
export CURRENCY_BEACON_API_KEY=...

1. Make sure you have installed packages and env variables are set
2. Update script generate_rates with correct values -> year / base currency / output currency
3. Run python3 generate_rates.py

1. Make sure you have installed packages and env variables are set
2. Make sure DATA_SOURCE points to a correct input file
3. The input file should have these columns:
   1. Date
   2. Description
   3. Money in
4. Run python3 generate_rates.py

There is no plans for the future. Hopefully I won't have to run it more than once a year, so I don't see a need to update it any further, but if I did I would:

1. Add parameters to generate_rates script. They should be taken from the command line.
2. Pass input file as a parameter for convert script.
3. Add more tests