Install psalm as dev, sync scripts updates

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

@@ -0,0 +1,42 @@
+<?php
+
+namespace LanguageServerProtocol;
+
+class FoldingRangeClientCapabilities
+{
+
+    /**
+     * Whether hover supports dynamic registration.
+     *
+     * @var bool|null
+     */
+    public $dynamicRegistration;
+
+    /**
+     * The maximum number of folding ranges that the client prefers to receive
+     * per document. The value serves as a hint, servers are free to follow the
+     * limit.
+     *
+     * @var int|null
+     */
+    public $rangeLimit;
+
+    /**
+     * If set, the client signals that it only supports folding complete lines.
+     * If set, client will ignore specified `startCharacter` and `endCharacter`
+     * properties in a FoldingRange.
+     *
+     * @var bool|null
+     */
+    public $lineFoldingOnly;
+
+    public function __construct(
+        bool $dynamicRegistration = null,
+        int $rangeLimit = null,
+        bool $lineFoldingOnly = null
+    ) {
+        $this->dynamicRegistration = $dynamicRegistration;
+        $this->rangeLimit = $rangeLimit;
+        $this->lineFoldingOnly = $lineFoldingOnly;
+    }
+}