Sprint 6: Finishing serverside, Stripe, WASM athentication and authorization

[BartVanGucht]

• [x] Sprint 6: Server: Booking functionality integration
• [x] Sprint 6: Server: Adding Radzen, Status repository
• [x] Sprint 6: Server: Adding Contacts, amenities in the admin main page
• [x] Sprint 6: server: Styling login and main page
• [x] Sprint 6: WASM: Stripe payment integration
• [x] Sprint 6: WASM: Authentication and Authorization in WebAssembly
• [x] Sptint 6: WASM: Adding Emails in the Blazor app
• [x] Sprint 6: WASM: Overall testing and bug fixing
• [x] Sprint 6: Server: Overall testing and bug fixing
• [x] Sprint 6: WASM: Self study on topics
• [x] Sprint 6: WASM: Self study on topics
• [x] Sprint 6: Retrospective
• [x] Sprint 6: Adding README.text in MarkDown
• [x] Sprint 6: WASM: adding images carroussel.