[v4] Switch from pre_push to pre-commit

# Conflicts:
# interactions/enums.py

Also add bot gateway endpoint for bots that need sharding.

(Removed my additions without warning.)

Making docs link to application-commands instead of slash-commands

docstrings linking to application-commands instead of slash-commands

# Conflicts:
# discord_slash/model.py
# discord_slash/utils/manage_commands.py

Fix code-block syntax in docs

Fix invalid code in documentation for cog support

Include failsafe for response after Timeout, and complete a few scattered endpoints from Guild

(For reference only, the d.py imports are commented out)

This switches gateway's URL retrieval to rely on the HTTP client.

Replaced links i could find that redirected to https://discord.com/developers/docs/interactions/...

[v4] Errors and JSON Responses

Also, implement HTTP exception switch in http.py

Updating pip package name

[v4] Models

especially JSON error codes.