Feature/add backup script params

[idelcano]

📌 References

🎩 What is the goal?

• Add --periodicity [PERIOD] --format [FORMAT NAME] --destination [DESTINATION_HOST]

📝 How is it being implemented?

I have modified the bash script adding the new params

💥 How can it be tested?

See --help

./backup_db.sh [NAME]
./backup_db.sh [NAME] --periodicity [PERIOD] --format [FORMAT NAME] --destination 
./backup_db.sh --periodicity [PERIOD] --format [FORMAT NAME] --destination [DESTINATION_HOST]
Valid periods: day-in-week week-in-month month-in-year
Valid formats: custom / plain
Destination: host
Example: ./backup_db.sh --periodicity day-in-week --format custom --destination gva11sucherubi.who.int
If no PERIOD is given, then a manual dump is generated with the timestamp, otherwise the given period is used in the name of the destination file.