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, 4 insertions, 0 deletions

diff --git a/src/build.rs b/src/build.rs
index 2fc98c57..613c9483 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -6,4 +6,8 @@ fn main() {
     if cfg!(target_os = "windows") && std::env::var("PROFILE").unwrap_or_default() != "release" {
         println!("cargo:rustc-link-arg=/STACK:8388608");
     }
+
+    // Embed the application icon into the Windows executable.
+    #[cfg(target_os = "windows")]
+    embed_resource::compile("assets/zellij.rc", embed_resource::NONE);
 }