runtime(hurl): add hurl filetype plugin(#13921)

Signed-off-by: Melker Ulander <melker.ulander@pm.me>
Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: mawkler

runtime/ftplugin/hurl.vim

@@ -0,0 +1,11 @@
+" Vim filetype plugin file
+" Language:     hurl
+" Maintainer:   Melker Ulander <melker.ulander@pm.me>
+" Last Changed: 2024 01 26
+
+if exists("b:did_ftplugin") | finish | endif
+
+let b:did_ftplugin = 1
+setlocal commentstring=#\ %s
+
+let b:undo_ftplugin = "setlocal commentstring<"