patch 9.1.1468: filetype: bright(er)script files are not recognized

Problem:  filetype: bright(er)script files are not recognized
Solution: detect *.bs files as brighterscript filetype and *.brs as
          brightscript filetype, include filetype plugins (Riley Bruins)

closes: #17566

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

src/testdir/test_filetype.vim

@@ -142,6 +142,8 @@ def s:GetFilenameChecks(): dict<list<string>>
     blank: ['file.bl'],
     blueprint: ['file.blp'],
     bp: ['Android.bp'],
+    brighterscript: ['file.bs'],
+    brightscript: ['file.brs'],
     bsdl: ['file.bsd', 'file.bsdl'],
     bst: ['file.bst'],
     bzl: ['file.bazel', 'file.bzl', 'WORKSPACE', 'WORKSPACE.bzlmod'],

src/version.c

@@ -709,6 +709,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1468,
 /**/
     1467,
 /**/