Install psalm as dev, sync scripts updates

vendor/felixfbecker/language-server-protocol/src/ClientCapabilitiesWindow.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace LanguageServerProtocol;
+
+class ClientCapabilitiesWindow
+{
+
+    /**
+     * Whether client supports handling progress notifications. If set
+     * servers are allowed to report in `workDoneProgress` property in the
+     * request specific server capabilities.
+     *
+     * @since 3.15.0
+     *
+     * @var boolean|null
+     */
+    public $workDoneProgress;
+
+    /**
+     * Capabilities specific to the showMessage request
+     *
+     * @since 3.16.0
+     *
+     * @var ShowMessageRequestClientCapabilities|null
+     */
+    public $showMessage;
+
+    /**
+     * Client capabilities for the show document request.
+     *
+     * @since 3.16.0
+     *
+     * @var ShowDocumentClientCapabilities|null
+     */
+    public $showDocument;
+
+
+    public function __construct(
+        bool $workDoneProgress = null,
+        ShowMessageRequestClientCapabilities $showMessage = null,
+        ShowDocumentClientCapabilities $showDocument = null
+    ) {
+        $this->workDoneProgress = $workDoneProgress;
+        $this->showMessage = $showMessage;
+        $this->showDocument = $showDocument;
+    }
+}