Fix asset location for linux bundles (#4460)

* fix linux bundle

* fix release mode

* fix resource path

* only use asset dir if it exists

* add comment about directory structure

* don't unwrap parent

packages/cli-config/src/lib.rs

@@ -64,6 +64,7 @@ pub const DEVSERVER_PORT_ENV: &str = "DIOXUS_DEVSERVER_PORT";
 pub const ALWAYS_ON_TOP_ENV: &str = "DIOXUS_ALWAYS_ON_TOP";
 pub const ASSET_ROOT_ENV: &str = "DIOXUS_ASSET_ROOT";
 pub const APP_TITLE_ENV: &str = "DIOXUS_APP_TITLE";
+pub const PRODUCT_NAME_ENV: &str = "DIOXUS_PRODUCT_NAME";
 
 #[deprecated(since = "0.6.0", note = "The CLI currently does not set this.")]
 #[doc(hidden)]
@@ -327,3 +328,8 @@ pub fn build_id() -> u64 {
             .unwrap_or(0)
     }
 }
+
+/// The product name of the bundled application.
+pub fn product_name() -> Option<String> {
+    read_env_config!("DIOXUS_PRODUCT_NAME")
+}