feat: implemented own profile getter;

experiment: using custom automapper function to map profile to profileDto;
refactor: adjusted ProfileService to use pointer return types with models

backend/internal/controllers/profile.go

@@ -234,5 +234,5 @@ func (ctrl *ProfileController) uploadAvatar(c *gin.Context) {
 		return
 	}
 
-	c.JSON(http.StatusOK, dto.UrlDto{Url: link})
+	c.JSON(http.StatusOK, dto.UrlDto{Url: *link})
 }