Reworked deprecated fileTypeFactory EP usage

Relates to #KT-38571

compiler/psi/src/org/jetbrains/kotlin/idea/KLibFileType.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea
+
+import com.intellij.ide.highlighter.ArchiveFileType
+
+object KLibFileType : ArchiveFileType() {
+
+    override fun getName(): String = "KLib"
+
+    override fun getDefaultExtension(): String = "klib"
+}