feat(php): switch the PHP language level from the status bar (#1371)

With a PHP file focused, the status bar shows the PHP level Intelephense
checks against (`PHP 7.4`); the tooltip says where it comes from (the
settings, config.platform.php or require.php). Clicking it opens Auto (with
the composer.json version) and 5.6 to 8.5; picking one writes the same
project setting as Settings › Languages & Frameworks › PHP, so diagnostics
follow without reopening the project. The widget is hidden for other files.
For a file of a linked workspace project, the level comes from that
project's settings and the choices are disabled. The menu is also the
action "PHP Language Level".

Closes #1091

Co-authored-by: DanielADK <[email protected]>

src-tauri/src/commands/mod.rs

@@ -387,6 +387,7 @@ pub fn builder() -> tauri_specta::Builder<tauri::Wry> {
         tools::jdk_download,
         sdk::sdk_detect,
         sdk::sdk_python_effective,
+        sdk::sdk_php_language_level,
         sdk::sdk_project_libraries,
         sdk::sdk_locate_tools,
         sdk::sdk_python_create_venv,

src-tauri/src/commands/sdk.rs

@@ -24,6 +24,17 @@ pub fn sdk_python_effective(window: Window, state: State<'_, AppState>) -> IdeRe
     ide_host::ops::sdk::sdk_python_effective(&state.host, window.label())
 }
 
+/// The PHP language level of the project `path` belongs to: the effective one and Auto's.
+#[tauri::command]
+#[specta::specta]
+pub async fn sdk_php_language_level(
+    window: Window,
+    state: State<'_, AppState>,
+    path: PathBuf,
+) -> IdeResult<ide_host::ops::sdk::PhpLanguageLevels> {
+    ide_host::ops::sdk::sdk_php_language_level(&state.host, window.label(), path).await
+}
+
 /// SDK / library source folders shown under "External Libraries" in the Project view,
 /// with the Maven / Gradle dependency jars of the build model.
 #[tauri::command]