feat!: Completely redo gateway process. (#1022)

* feat: Implement barebones GW ratelimiter, implement resume url usage.

This also refactors some attributes to utilise the ratelimiter and more importantly, the heartbeat loop.
(It still works the same!)

* feat: Refactor variable switching, optimise seq definitions, written primitive restart command.

* feat!: Cache websocket url, completely redo WS client process/instantiation and client login process, implement ratelimiter to GW process

* docs, chore: Remove unused code/imports/log prints, optimise docs/slots

* docs, chore: Remove/refactor unused comments, document and typehint ratelimiter object

* docs: Fix misprint on log debug division

* feat: Implement a _stop() client function.

* fix: Supress error code 4001.

* fix: Change to int value conversions for payload, readd afk attribute to ClientPresence object, revert suppress 4001 commit.

* docs, refactor: Tweak ratelimit functions to properties, redo ratelimit documentation and usage of logger exceptions

* docs: Tweak ratelimit delay description

* fix: Fix changing client presence to IDLE without providing activities attribute

* refactor!: Rename __task attribute to _task

Author: FayeDel

interactions/api/gateway/__init__.py

@@ -6,3 +6,4 @@
 """
 from .client import *  # noqa: F401 F403
 from .heartbeat import *  # noqa: F401 F403
+from .ratelimit import *  # noqa: F401 F403