[V3 RPC] Swap back to initial RPC library and hook into core commands (#1780)

* Switch RPC libs for websockets support

* Implement RPC handling for core

* Black reformat

* Fix docs for build on travis

* Modify RPC to use a Cog base class

* Refactor rpc server reference as global

* Handle cogbase unload method

* Add an init call to handle mutable base attributes

* Move RPC server reference back to the bot object

* Remove unused import

* Add tests for rpc method add/removal

* Add tests for rpc method add/removal and cog base unloading

* Add one more test

* Black reformat

* Add RPC mixin...fix MRO

* Correct internal rpc method names

* Add rpc test html file for debugging/example purposes

* Add documentation

* Add get_method_info

* Update docs with an example RPC call specifying parameter formatting

* Make rpc methods UPPER

* Black reformat

* Fix doc example

* Modify this to match new method naming convention

* Add more tests

redbot/core/events.py

@@ -18,6 +18,7 @@ from .data_manager import storage_type
 from .utils.chat_formatting import inline, bordered, pagify, box
 from .utils import fuzzy_command_search
 from colorama import Fore, Style, init
+from . import rpc
 
 log = logging.getLogger("red")
 sentry_log = logging.getLogger("red.sentry")
@@ -84,6 +85,9 @@ def init_events(bot, cli_flags):
             if packages:
                 print("Loaded packages: " + ", ".join(packages))
 
+        if bot.rpc_enabled:
+            await bot.rpc.initialize()
+
         guilds = len(bot.guilds)
         users = len(set([m for m in bot.get_all_members()]))
 
@@ -172,8 +176,6 @@ def init_events(bot, cli_flags):
             print("\nInvite URL: {}\n".format(invite_url))
 
         bot.color = discord.Colour(await bot.db.color())
-        if bot.rpc_enabled:
-            await bot.rpc.initialize()
 
     @bot.event
     async def on_error(event_method, *args, **kwargs):