Coaching program page

[DanteDoesDmg]

Description To launch the coaching program we need a separate page to display coaches and book appointments with them through calendly or a similar software.

Acceptance Criteria

• [x] List of coaches loaded from a google sheet
• [ ] Coaches list loaded from a google sheet owned by the IJC gmail account
• [ ] Linking to the coaching program page in navigation for all languages
• [x] Appointment booking mechanism
• [x] User input sanitization
• [ ] Original images for the coaching page
• [ ] Council approved program description
• [ ] Translations

Additional Notes In the initial commit for this issue I've already proposed a layout and added some of the necessary features. We still need to:

• Change the photos - currently the images on the coaching page are reused images from other pages
• Add transations and navigation for DE and ES - including the coaching categories such as "general fitness" etc
• Review the proposed coaching program description
• Move the google form/sheet/image gallery to the IJC google drive

For testing purposes on the existing coaches please don't complete the appointment booking or add IJC-TEST to the appointment description, as the calendly link leads to my private account at the moment :)

[DanteDoesDmg]

I'd like to push my changes to a branch within the repo but currently lack the permissions to do so. I'd appreciate being granted the access so I can publish my work :)

EDIT: Done :)