Remove the vendor directory in .gitignore as these dependencies are needed for php-imap

plugins/php-imap/vendor/illuminate/contracts/Database/Query/Builder.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Illuminate\Contracts\Database\Query;
+
+/**
+ * This interface is intentionally empty and exists to improve IDE support.
+ *
+ * @mixin \Illuminate\Database\Query\Builder
+ */
+interface Builder
+{
+}

plugins/php-imap/vendor/illuminate/contracts/Database/Query/ConditionExpression.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Illuminate\Contracts\Database\Query;
+
+interface ConditionExpression extends Expression
+{
+}

plugins/php-imap/vendor/illuminate/contracts/Database/Query/Expression.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Illuminate\Contracts\Database\Query;
+
+use Illuminate\Database\Grammar;
+
+interface Expression
+{
+    /**
+     * Get the value of the expression.
+     *
+     * @param  \Illuminate\Database\Grammar  $grammar
+     * @return string|int|float
+     */
+    public function getValue(Grammar $grammar);
+}