Enable/add socks proxy support (for windows build)

[c33s]

gallery-dl --proxy socks5://proxy.company.com:1080 https://gallery.com/1515
[gallery][error] HttpError: InvalidSchema: Missing dependencies for SOCKS support.

[mikf]

.exe for v1.17.2 now has embedded PySocks and supports SOCKS proxies.
The `executables action still needs to be updated, though.

[catshitz]

v1.19.0 no longer supports socks5
[cyberdrop][error] HttpError: InvalidSchema: Missing dependencies for SOCKS support.

[mikf]

@catshitz I'm aware. I changed the way Windows executables get built and forgot to include PySocks. Will be fixed in the next release.
The executables from https://github.com/mikf/gallery-dl/actions/runs/1296444613 should still have working socks5 support, although they might trigger AV software.

[eduard93]

1.24.2 installed via pip still shows [error] HttpError: InvalidSchema: Missing dependencies for SOCKS support.

[mikf]

@eduard93 pip install pysocks