Correctly load markers

[andrrsin]

We have to load the markers for the moment to retrieve the user's markers the code existing is:

async function fetchLandmarks() {
      let landmks: Landmark[] = [];
      makeRequest.post("/landmarks/friend", { webId: session.info.webId?.split("#")[0] }).then((res1) => {
        for (let i = 0; i < res1.data.length; i++) {
          let landmark = new Landmark(
                         res1.data[i].name, res1.data[i].latitude, res1.data[i].longitude, res1.data[i].category);
          landmks.push(landmark);
        }
        setLandmarks(loadLandmarks(landmks));
      });

    }

We have to

• Load also for friends(I can work on it)
• Load it to the map(URGENT)
• Filter in th epage created.

[jjgancfer]

See #130 for the fix. Also, duplicated issue with #110.