Lua: Further centralize code, fix Bizhawk 2.9 (#1685)

* Fixes the socket library for bizhawk 2.9/lua 5.4 by including another one in parallel
* Fixes lua 5.4 support by making socket.lua into a "modern" module (the `module` keyword is gone)
* Adds the linux version and 32 bit windows socket dlls because why not
* Merges common functions into `common.lua` - the only functional change of this should be that:
  * Some things that were locals are globals now - this can be changed, I just was lazy and it likely doesn't matter
  * `drawText` now uses middle/bottom for all prints - feel free to do what you like with that change

data/lua/x64/luasocket.LICENSE.txt

@@ -0,0 +1,20 @@
+LuaSocket 3.0 license
+Copyright <20> 2004-2013 Diego Nehab
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.