feat(windows): append .rc content support. (#15263)

* feat(windows): append .rc content support.

* chore: update api comments.

* chore: add change file.

* Update crates/tauri-build/src/lib.rs

Co-authored-by: Tony <68118705+Legend-Master@users.noreply.github.com>

* fix: appending logic.

* chore: update comments.

---------

Co-authored-by: Tony <68118705+Legend-Master@users.noreply.github.com>

Author: Kokoro2336

.changes/append-rc-content-support.md

@@ -0,0 +1,5 @@
+---
+"tauri-build": minor:feat
+---
+
+Allow users to append extra `.rc` content by `append_rc_content` in `WindowsAttributes`.

crates/tauri-build/src/lib.rs

@@ -242,6 +242,8 @@ pub struct WindowsAttributes {
   ///
   /// [application manifest]: https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests
   app_manifest: Option<String>,
+  /// A series of strings containing additional .rc content to be appended to the generated resource file on Windows.
+  append_rc_content: Vec<String>,
 }
 
 impl Default for WindowsAttributes {
@@ -256,6 +258,7 @@ impl WindowsAttributes {
     Self {
       window_icon_path: Default::default(),
       app_manifest: Some(include_str!("windows-app-manifest.xml").into()),
+      append_rc_content: Vec::new(),
     }
   }
 
@@ -265,6 +268,7 @@ impl WindowsAttributes {
     Self {
       app_manifest: None,
       window_icon_path: Default::default(),
+      append_rc_content: Vec::new(),
     }
   }
 
@@ -334,6 +338,14 @@ impl WindowsAttributes {
     self.app_manifest = Some(manifest.as_ref().to_string());
     self
   }
+
+  /// Append additional .rc content to the generated resource file on Windows.
+  /// This can be called multiple times to append multiple contents.
+  #[must_use]
+  pub fn append_rc_content<S: Into<String>>(mut self, content: S) -> Self {
+    self.append_rc_content.push(content.into());
+    self
+  }
 }
 
 /// The attributes used on the build.
@@ -613,6 +625,10 @@ pub fn try_build(attributes: Attributes) -> Result<()> {
       res.set_manifest(&manifest);
     }
 
+    for content in attributes.windows_attributes.append_rc_content {
+      res.append_rc_content(&content);
+    }
+
     if let Some(version_str) = &config.version {
       if let Ok(v) = Version::parse(version_str) {
         let version = (v.major << 48) | (v.minor << 32) | (v.patch << 16);