patch 9.0.1288: FunC files are not recognized

Problem:    FunC files are not recognized.
Solution:   Recognize FunC files. (Amaan Qureshi, closes #11949)

runtime/filetype.vim

@@ -706,6 +706,9 @@ au BufNewFile,BufRead *.fsl			setf framescript
 " FStab
 au BufNewFile,BufRead fstab,mtab		setf fstab
 
+" Func
+au BufNewFile,BufRead *.fc			setf func
+
 " Fusion
 au BufRead,BufNewFile *.fusion			setf fusion
 

src/testdir/test_filetype.vim

@@ -209,6 +209,7 @@ let s:filename_checks = {
     \ 'fsh': ['file.fsh'],
     \ 'fsharp': ['file.fs', 'file.fsi', 'file.fsx'],
     \ 'fstab': ['fstab', 'mtab'],
+    \ 'func': ['file.fc'],
     \ 'fusion': ['file.fusion'],
     \ 'fvwm': ['/.fvwm/file', 'any/.fvwm/file'],
     \ 'gdb': ['.gdbinit', 'gdbinit', 'file.gdb', '.config/gdbearlyinit', '.gdbearlyinit'],

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1288,
 /**/
     1287,
 /**/