Add Winget, Chocolatey, Scoop, and Homebrew installation instructions

[sitiom]

Which bug report or feature request do these changes address?
Add Winget, Chocolatey, Scoop, and Homebrew installation instructions for notion-repackaged.

What does your code do and why?
Add a reference to it in the installation section.

[sitiom]

PR on Winget: microsoft/winget-pkgs#62256

[dragonwocky]

Not merging because we didn't set these packages up, we can't verify them as being up to date or accurate builds of the notion-enhancer so we won't be promoting them as recommended installation methods. If you would like another distribution method to be supported by the notion-enhancer, open an issue/PR over at notion-repackaged to add it to our build/release cycle.

I'm sure they're all probably perfectly fine, but still - I'd rather we were the ones distributing the notion-enhancer rather than relying on externally-maintained packages. That way we're aware of what's released where and we can coordinate updates etc. I'm sure you can understand.

[sitiom]

@dragonwocky See notion-enhancer/notion-repackaged#104

[dragonwocky]

@sitiom thanks, I'll take care of setting that up when it's time for the next release. Updating the installation instructions can wait until then - there are enough distribution methods available already to support every platform the notion-enhancer runs on, any more are just matters of personal preference.