patch 9.1.0421: filetype: hyprlang files are not recognized

Problem:  filetype: hyprlang files are not recognized
Solution: recognize 'hypr{land,paper,idle,lock}.conf' files
          as 'hyprlang' filetype, add hyprlang ftplugin
          (Riley Bruins)

closes: #14803

Signed-off-by: Riley Bruins <ribru17@hotmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

.github/MAINTAINERS

@@ -155,6 +155,7 @@ runtime/ftplugin/heex.vim		@cvincent
 runtime/ftplugin/hgcommit.vim		@k-takata
 runtime/ftplugin/hog.vim		@wtfbbqhax
 runtime/ftplugin/html.vim		@dkearns
+runtime/ftplugin/hyprlang.vim		@ribru17
 runtime/ftplugin/i3config.vim		@hiqua
 runtime/ftplugin/icon.vim		@dkearns
 runtime/ftplugin/indent.vim		@dkearns

runtime/filetype.vim

@@ -1044,6 +1044,9 @@ au BufRead,BufNewFile *.hurl			setf hurl
 " Hyper Builder
 au BufNewFile,BufRead *.hb			setf hb
 
+" Hyprlang
+au BufNewFile,BufRead hypr\(land\|paper\|idle\|lock\).conf	setf hyprlang
+
 " Httest
 au BufNewFile,BufRead *.htt,*.htb		setf httest
 

runtime/ftplugin/hyprlang.vim

@@ -0,0 +1,13 @@
+" Vim filetype plugin
+" Language:	hyprlang
+" Maintainer:	ribru17 <ribru17@gmail.com>
+" Last Change:	2024 May 18
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+setl comments=:# commentstring=#\ %s
+
+let b:undo_ftplugin = 'setl com< cms<'

src/testdir/test_filetype.vim

@@ -336,6 +336,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     htmlm4: ['file.html.m4'],
     httest: ['file.htt', 'file.htb'],
     hurl: ['file.hurl'],
+    hyprlang: ['hyprlock.conf', 'hyprland.conf', 'hypridle.conf', 'hyprpaper.conf'],
     i3config: ['/home/user/.i3/config', '/home/user/.config/i3/config', '/etc/i3/config', '/etc/xdg/i3/config'],
     ibasic: ['file.iba', 'file.ibi'],
     icemenu: ['/.icewm/menu', 'any/.icewm/menu'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    421,
 /**/
     420,
 /**/