Create proper symlinks on windows

[skelewir]

Currently on Linux ~/.local/share/mise/installs/ has a bunch of useful symlinks like latest, 1.0, etc. Which point to the actual version folder.
On Windows those are just plain text files, not actual windows-symlinks. It would be great to have those, for better introperability with apps outside mise. For example I could globally add ~/.local/share/mise/installs/node/latest/ to my PATH, so I have globally accessible latest nodejs. Even without calling mise activate etc.

[skelewir]

The same for the shims, on linux they are actual symlinks. On windows - they are script wrappers.
You can make them symlinks on windows too. For example busybox for windows does that.

[roele]

Have a look at the windows_shim_mode setting.

[lewis-yeung]

Yeah, we need working runtime symlinks on Windows. 🙏 This is also discussed in #4835.