Floaterest

Results 3 issues of Floaterest

**Describe the bug** The artifact of the [latest build](https://ci.appveyor.com/api/projects/daa84/neovim-gtk/artifacts/nvim-gtk-mingw64.7z?branch=master) on Windows is not found. I think it's because the lastest successful build on AppVeyor is at 925382a6a1d1215452b46937bb2884d20325a8d8, which is more...

Currently the `TypstPreview` command will spawn the typst-preview binary with `--static-file-host 127.0.0.1:0`, which will let typst-preview choose a random port. https://github.com/chomosuke/typst-preview.nvim/blob/15eaaffc0a2d8cd871f485f399d1d67ed3322a0b/lua/typst-preview/servers/factory.lua#L30-L31 It would be nice if there's an `port` option...

Passing `--static-file-host 127.0.0.1:0` as arguments to the typst preview binary will start the preview local server on a random port. This PR adds an option to the config that allows...