patch 9.0.2079: Not all Dart files detected

Problem:  Not all Dart files detected
Solution: Add shebang filetype detection for Dart

closes: #13449

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/autoload/dist/script.vim b/runtime/autoload/dist/script.vim
index fd7b8e0..8de8296 100644
--- a/runtime/autoload/dist/script.vim
+++ b/runtime/autoload/dist/script.vim
@@ -221,6 +221,10 @@
   elseif name =~ '^janet\>'
     return 'janet'
 
+    # Dart
+  elseif name =~ '^dart\>'
+    return 'dart'
+
   endif
 
   return ''
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 30c3a1a..bde5c1b 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -955,7 +955,8 @@
     crystal: [['#!/path/crystal']],
     rexx:   [['#!/path/rexx'],
             ['#!/path/regina']],
-    janet: [['#!/path/janet']],
+    janet:  [['#!/path/janet']],
+    dart:   [['#!/path/dart']],
   }
 enddef
 
diff --git a/src/version.c b/src/version.c
index b127b6a..fdfdf3f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2079,
+/**/
     2078,
 /**/
     2077,