TODO: Pass needed parameters in the request.

@Summary Get all quotations @Description Returns all quotations @Accept json @Produce json @Success 200 {array} Quotation @Router /quotation [get].

@Summary Get a quotation @Description Returns a quotation @Accept json @Produce json @Success 200 {object} Quotation @Router /quotation/{id} [get].

LoginHandler authenticates a user and returns a session token.

important key is to fetch from frontend by using credentials :"include".