vim-patch:9.1.1517: filetype: autopkgtest files are not recognized

Problem:  filetype: autopkgtest files are not recognized
Solution: detect */debian/tests/control files as autopkgtest filetype
          (James McCoy)

Autopkgtest is a Debian tool for testing installed versions of packages
when other, related packages are updated.

Reference:
- https://www.debian.org/doc/debian-policy/autopkgtest.txt

related: vim/vim#17679

5bcc492649

Co-authored-by: James McCoy <jamessan@jamessan.com>

runtime/lua/vim/filetype.lua

@@ -1969,6 +1969,7 @@ local detect_xkb = starsetf('xkb')
 local pattern = {
   -- BEGIN PATTERN
   ['/debian/'] = {
+    ['/debian/tests/control$'] = 'autopkgtest',
     ['/debian/changelog$'] = 'debchangelog',
     ['/debian/control$'] = 'debcontrol',
     ['/debian/copyright$'] = 'debcopyright',

runtime/lua/vim/filetype/detect.lua

@@ -264,6 +264,8 @@ function M.control(_, bufnr)
   local line1 = getline(bufnr, 1)
   if line1 and findany(line1, { '^Source:', '^Package:' }) then
     return 'debcontrol'
+  elseif line1 and findany(line1, { '^Tests:', '^Test%-Command:' }) then
+    return 'autopkgtest'
   end
 end