fix: Use relative path for RustEmbed macro, fixes #447 (#448)

Author: FabianLars

.changes/rustembed-panic.md

@@ -0,0 +1,6 @@
+---
+"create-tauri-app": "patch"
+"create-tauri-app-js": "patch"
+---
+
+Fix build panic with newer minor versions of `rust-embed`.

packages/cli/src/template.rs

@@ -10,7 +10,7 @@ use rust_embed::RustEmbed;
 use crate::{manifest::Manifest, package_manager::PackageManager};
 
 #[derive(RustEmbed)]
-#[folder = "$CARGO_MANIFEST_DIR/fragments"]
+#[folder = "fragments"]
 #[allow(clippy::upper_case_acronyms)]
 struct FRAGMENTS;