Change bind_unix to socket_binding, add socket_permissions and config example

config/config.example.yml

@@ -130,6 +130,27 @@ https_only: false
 ##
 #hsts: true
 
+##
+## Path of a UNIX socket to listen on for incoming connections.
+##
+## Note: Enabling socket will make invidious stop listening on the address
+## specified by 'host_binding' and 'port'.
+##
+## Accepted values: Any path to a new file (that doesn't exist yet)
+## Default: <none>
+##
+socket_binding: /tmp/invidious.sock
+
+##
+## Permissions for the UNIX socket specified by 'socket_binding'.
+##
+## Note: The permissions are given in octal, following UNIX convention.
+##
+## Accepted values: 000-777
+## Default: 777
+##
+socket_permissions: 777
+
 
 # -----------------------------
 #  Network (outbound)
@@ -177,7 +198,7 @@ https_only: false
 ## Configuration for using a HTTP proxy
 ##
 ## If unset, then no HTTP proxy will be used.
-## 
+##
 http_proxy:
   user:
   password:
@@ -839,7 +860,7 @@ default_user_preferences:
   ## Default: true
   ##
   #vr_mode: true
-  
+
   ##
   ## Save the playback position
   ## Allow to continue watching at the previous position when