Merge branch 'mobile_subs_conn' into 'main'

backend/src/backend/App.js

backend/src/backend/DatabaseConnection.js

db/creation_db.sql

db/db.sql

db/insertion_donne_RDV.sql

db/insertion_donne_Video.sql

db/insertion_donne_adresse.sql

db/insertion_donne_article.sql

db/insertion_donne_client.sql

db/insertion_donne_conseil.sql

db/insertion_donne_horaire.sql

db/insertion_donne_jour.sql

mobile_app/App.js

mobile_app/assets/adaptive-icon.png

mobile_app/assets/favicon.png

mobile_app/assets/fonts/Inter-Bold.ttf

mobile_app/assets/fonts/Inter-Light.ttf

mobile_app/assets/fonts/Inter-Medium.ttf

mobile_app/assets/fonts/Inter-Regular.ttf

mobile_app/assets/fonts/Inter-SemiBold.ttf