Sziani test Libeo

[sziani]

Hello !

I created my own branch szianiTest to keep my code isolated for adding this new feature.

• Update of the if statements in "pharmacy.js" with a switch statement to have a cleaner code
• Adding 10 tests on "pharmacy.test.js" to secure our logic
• new output.txt was also pushed
• Adding "Dafalgan" to index.js to test the new drug

What I do not succeed:

• Adding a new "pharmacy.ts" which generates my actual "pharmacy.js" file
• Reduce drastically the actual lines of code from the original file

Thank you for this test I had fun working on it.