Hosts reservations filter improvements

Text Input type filter used currently in Hosts reservations view has some limitations and drawbacks (#917 (comment 423973)).

E.g. it is not possible to filter out all reservations in 2 subnets.

This could be improved by leaving existing Text Input only for filtering byText and introducing something different for filtering by appId, subnetId, keaSubnetId, global. This could be e.g. multiselect (https://primeng.org/multiselect).