patch 9.0.1395: Odin files are not recognized

Problem:    Odin files are not recognized.
Solution:   Add a pattern for Odin files. (Amaan Qureshi, closes #12122)

runtime/filetype.vim

@@ -1402,6 +1402,9 @@ au BufNewFile,BufRead *.occ			setf occam
 " Octave
 au BufNewFile,BufRead octave.conf,.octaverc,octaverc	setf octave
 
+" Odin
+au BufNewFile,BufRead *.odin			setf odin
+
 " Omnimark
 au BufNewFile,BufRead *.xom,*.xin		setf omnimark
 

src/testdir/test_filetype.vim

@@ -414,6 +414,7 @@ let s:filename_checks = {
     \ 'ocaml': ['file.ml', 'file.mli', 'file.mll', 'file.mly', '.ocamlinit', 'file.mlt', 'file.mlp', 'file.mlip', 'file.mli.cppo', 'file.ml.cppo'],
     \ 'occam': ['file.occ'],
     \ 'octave': ['octaverc', '.octaverc', 'octave.conf'],
+    \ 'odin': ['file.odin'],
     \ 'omnimark': ['file.xom', 'file.xin'],
     \ 'opam': ['opam', 'file.opam', 'file.opam.template'],
     \ 'openroad': ['file.or'],

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1395,
 /**/
     1394,
 /**/