runtime(rescript): include basic rescript ftplugin file (#14822)

Reference: https://rescript-lang.org/docs/manual/latest/overview#comments

Signed-off-by: Riley Bruins <ribru17@hotmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/.github/MAINTAINERS b/.github/MAINTAINERS
index 3ae962b..519a6c9 100644
--- a/.github/MAINTAINERS
+++ b/.github/MAINTAINERS
@@ -207,6 +207,7 @@
 runtime/ftplugin/qml.vim		@ChaseKnowlden
 runtime/ftplugin/racket.vim		@benknoble
 runtime/ftplugin/readline.vim		@dkearns
+runtime/ftplugin/rescript.vim		@ribru17
 runtime/ftplugin/routeros.vim		@zainin
 runtime/ftplugin/rst.vim		@marshallward
 runtime/ftplugin/ruby.vim		@tpope @dkearns
diff --git a/runtime/ftplugin/rescript.vim b/runtime/ftplugin/rescript.vim
new file mode 100644
index 0000000..dd94c68
--- /dev/null
+++ b/runtime/ftplugin/rescript.vim
@@ -0,0 +1,13 @@
+" Vim filetype plugin
+" Language:	rescript
+" Maintainer:	Riley Bruins <ribru17@gmail.com>
+" Last Change:	2024 May 21
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+setl comments=sO:*\ -,mO:*\ \ ,exO:*/,s1:/*,mb:*,ex:*/,:// commentstring=//\ %s
+
+let b:undo_ftplugin = 'setl com< cms<'