Add all vim filetypes

ftplugin/swiftgyb.vim

@@ -0,0 +1,15 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'swiftgyb') == -1
+
+" This source file is part of the Swift.org open source project
+"
+" Copyright (c) 2014 - 2020 Apple Inc. and the Swift project authors
+" Licensed under Apache License v2.0 with Runtime Library Exception
+"
+" See https://swift.org/LICENSE.txt for license information
+" See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+"
+" Vim maintainer: Emir SARI <bitigchi@me.com>
+
+runtime! ftplugin/swift.vim
+
+endif