Lets don't keep filters files locally (as option)

[luckydevil13]

Prerequisites

• I have checked the Wiki and Discussions and found no answer

• I have searched other issues and found no duplicates

• I want to request a feature or enhancement and not ask a question

The problem

Openwrt.
I need persistent static DHCP leases - setup working dir to keep files (leases + filters + session) on NAND. On every update of filter we have additional writes to NAND.

Looks like filters could be downloaded to /tmp and compiled and removed.
I don't need downloaded filters files on flash.

Proposed solution

lets add option to config: not keep files in work_dir/filter/*

Alternatives considered and additional information

No response