DNS: Add timeoutMs for DnsServerObject

[patterniha]

The timeout for each dns is fixed and is 4 seconds.

For some types of dns like doh+fragment, this value may not be enough, but for some other types of dns like udp(freedom), it is too much!

Also, if we want to use fallback, this value is too much. suppose, for example, we have two fallbacks other than the main dns, so it takes 8 seconds to use the second fallback !!!

So the user should be able to decrease or increase this timeout.

[patterniha]

also, i want to use government-run DNS "shecan", for all domains unless the domain is blocked, to bypass "sanctioned-websites" in telegram version of Serverless-for-Iran.

if the domain is blocked, 2 things can happen:

1. "shecan" return 10.10.34.34-36 spoofed-IP.
2. Do not return anything

So if either of these happens, i should use another non-filter dns.

because "shecan" is a domestic service i think even 1-2 seconds timeout is too much, but now we have to wait 4 seconds !!!

[RPRX]

毫秒为单位的都加上 Ms 吧，比如 timeoutMs

大致看了一下好像只有 REALITY 那个 maxTimeDiff 没加 Ms，等会儿给它 break 了

[RPRX]

顺便 rebase 一下

[patterniha]

毫秒为单位的都加上 Ms 吧，比如 timeoutMs

大致看了一下好像只有 REALITY 那个 maxTimeDiff 没加 Ms，等会儿给它 break 了

done.

[RPRX]

基于 86a225c rebase 一下

[RPRX]

你可以 push commits 后 reopen 这个 PR

[patterniha]

You can push commits and reopen this PR

done.