Make VT requests multithreaded

[YamatoSecurity]

I would like to make the VT requests (vt-domain-lookup, vt-hash-lookup, vt-ip-lookup commands) multithreaded to make VT lookups much faster.
Also, I would like to use Puppy for HTTPS requests if possible as it does not require including extra DLLs, etc... However, we need to test that it works on Win, mac and linux first.

@fukusuket Are you interested in this?

[fukusuket]

@YamatoSecurity
Thank you for the mention :) Yes, I would love to implement it!💪 I would like to start by studying Nim programming ^^

[YamatoSecurity]

@fukusuket Oh great, thanks!

[fukusuket]

@YamatoSecurity
I have a question! What's the main reason you want to use Puppy if we can?
(Does it have anything to do with parallelization?)

[YamatoSecurity]

@fukusuket It has nothing to do with parallelization. Right now we have to include extra DLLs for Windows and compile with -d:ssl but those are not necessary with Puppy. So it is not such a high priority and if it makes takajo less compatible for some reason or causes problems then we can leave it as is but would like to remove as much dependencies as possible.

[fukusuket]

I see, I understand that we can remove the extra dependency :) I will try Puppy💪

[fukusuket]

Puppy's compile error(with Nim 2.0.0) was fixed by merging the following PR ^^

• Fix Nim 2.0.0 compile error caused by _ variables treeform/puppy#107