Slash-help

- No code change
- Added buttons to README.md

- Actually fixes the issue listed in the releases above

- Should actually work now

- Slash commands show up now if there are no global commands
- Properly errors if there are no global or guild commands
- Fixed README.md examples

- Usage of `__slots__`, saving a bit of memory
- Fixed context menus' how to use
- Added `timeout` to `Paginator` (whoops)
- Added optional footer to the search embeds

*Can anyone please test v2 for me please thank you very much*

- New redesign
- More efficient
- A master list instead of multiple lists
- *Extremely* fast
- New arguments
- New examples in README.md
- Ability to make your own command]
- Set `auto_create=False`
- Create your own command
- Use `await help_slash.send_help(ctx, command)`
- Can also put `prefix` in `send_help()` as well as `SlashHelp()`
- Overrides `bot.command_prefix`
- And lots more!