Add Windows MSI installer with WiX v6 (#4847)

* Add Windows MSI installer with WiX v6

Build a dual-scope MSI installer that lets users choose per-user
(%LocalAppData%\Zellij) or per-machine (Program Files\Zellij) install,
with automatic PATH configuration and clean uninstall support.

- Custom UI based on stock WixToolset.UI.wixext dialogs to work around
  the long-standing WixUI_Advanced dual-scope bug (wixtoolset/issues#7137)
- Custom folder resolution CAs (SetFolderPerUser/SetFolderPerMachine)
- Embed application icon into zellij.exe via embed-resource
- Icon shown in Add/Remove Programs via ARPPRODUCTICON
- MSI build integrated into release.yml CI workflow

* Add MSI installer to no-web build and fix artifact naming

- Add MSI build steps to build-release-noweb job
- Add SHA256 checksums for MSI artifacts
- Pin WixToolset.UI.wixext to 6.0.2 to avoid v7 RC incompatibility
- Use -installer suffix after target in artifact names

---------

Co-authored-by: divens <divens.dev@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 52a476fc..b8d8fb58 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,6 +33,9 @@ isahc = { workspace = true }
 [target.'cfg(unix)'.dependencies]
 nix = { workspace = true }
 
+[target.'cfg(windows)'.build-dependencies]
+embed-resource = "3"
+
 [dev-dependencies]
 insta = { version = "1.6.0", features = ["backtrace"] }
 ssh2 = "0.9.1"