Add new AdGuard filter list for blocking bug tracker services

[slavaleleka]

https://github.com/AdguardTeam/AdguardFilters/blob/master/SpywareFilter/sections/tracking_servers.txt#L22

[DandelionSprout]

I feel that such a list would need more than circa 18 entries in order to be worthwhile, but it'd cover an exclusive niche that not even lists on FilterlistsCOM seem to cover.