#20 create endpoints to fetch packages data from a server

[jeandreidc]

Resolves #20

Done

• Fixed bug that parser only returns data for one country
  • Now returns an array of countryData
• Introduced a new GET endpoint /packages/{countryCode}
  • We can now filter data by country
  • Fetches data from local json file generated after uploading a CSV file
• Added skeleton code for database handling
• Updated docker compose to spin off an sql server instance locally

Screenshots