[Database] Optimize database scheme

[ITegs]

[!IMPORTANT] TBD: Use RFC-Dates or unix timestamps?

edit: using RFC3339 for now

---

Trip:

Contains the overall information about the trip:

• Title
• Owner
• Start date
• End date
• Spots: {"spotId": ObjectId("..."), "longitude": 1234, "latitude": 1234}[]

Example object

```json { "_id": ObjectId("..."), "name": "Roadtrip A", "startDate": "2023-08-01", "endDate": "2023-08-15", "spots": [{ "spotId": ObjectId("..."), "longitude": 1234, "latitude": 1234, }, {...}] } ```

---

Spots:

Contains all spots:

• RoadtripId
• Title
• Longitude
• Latitude
• Image[]
• Description
• Date from
• Date to

Example object

```json { "_id": ObjectId("..."), "roadtripId": ObjectId("..."), "title": "Garmisch-Partenkirchen", "longitude": 1234, "latitude": 1234, "image": [{"src": "base64encodedstring1", "timestamp": 1722929583}], "description": "Beautiful mountain view", "date_from": 1722929583, "date_to": 1722939583, } ```

[ITegs]

Using RFC3339 dates for now. 2006-01-02T15:04:05Z07:00

[ITegs]

Schema updated in 5ca82c4