new bridge setup guide: Void Linux
by merging this request we:
- add Void Linux to the list of "Bridge Relay Guides";
- as we have an official
obfs4proxy
package here, we use it;- but, keeping the consistency (taken from ALL guides), we mention about installing from source;
- building and installing from source reference points to upstream's docs;
- keep up with previous efforts of adding consistency to all relay setup guides;
- let the key: empty for now
- same as GITHUB#163 and GITHUB#164
This MR came from https://github.com/torproject/community/pull/165
Edited by Vinícius Zavam