Add all campus contact details in footer

[eltazy]

Right now the footer displays our email for contact and Kinshasa's phone number only. the other cities numbers and whatsapp should be added

Sub-tasks

• [x] include an sms shortcut
• [x] add whatsapp message link
• [x] add phone call link
• [x] filter or display per city

[lys-0243]

task already done @eltazy