vim-patch:9.1.1134: filetype: Guile init file not recognized

Problem:  filetype: Guile init file not recognized
Solution: detect '.guile' file as scheme filetype
          (David Mandelberg)

References:

https://www.gnu.org/software/guile/manual/html_node/Init-File.html
> When run interactively, Guile will load a local initialization file
> from ~/.guile. This file should contain Scheme expressions for
> evaluation.

closes: vim/vim#16683

41a6026f00

Co-authored-by: David Mandelberg <david@mandelberg.org>

runtime/lua/vim/filetype.lua

@@ -1802,6 +1802,7 @@ local filename = {
   Vagrantfile = 'ruby',
   ['smb.conf'] = 'samba',
   ['.lips_repl_history'] = 'scheme',
+  ['.guile'] = 'scheme',
   screenrc = 'screen',
   ['.screenrc'] = 'screen',
   ['/etc/sensors3.conf'] = 'sensors',

test/old/testdir/test_filetype.vim

@@ -672,7 +672,7 @@ func s:GetFilenameChecks() abort
     \ 'sass': ['file.sass'],
     \ 'sbt': ['file.sbt'],
     \ 'scala': ['file.scala', 'file.mill'],
-    \ 'scheme': ['file.scm', 'file.ss', 'file.sld', 'file.stsg', 'any/local/share/supertux2/config', '.lips_repl_history'],
+    \ 'scheme': ['file.scm', 'file.ss', 'file.sld', 'file.stsg', 'any/local/share/supertux2/config', '.lips_repl_history', '.guile'],
     \ 'scilab': ['file.sci', 'file.sce'],
     \ 'screen': ['.screenrc', 'screenrc'],
     \ 'scss': ['file.scss'],