vim-patch:9.1.0596: filetype: devscripts config files are not recognized (#29773)

Problem:  filetype: Debian devscripts config files are not recognized
Solution: detect devscripts.conf and .devscripts files as sh filetype
          (sourced by /bin/sh)

closes: vim/vim#15227

76c19028ff

Co-authored-by: Wu, Zhenyu <wuzhenyu@ustc.edu>

runtime/lua/vim/filetype.lua

@@ -1626,6 +1626,8 @@ local filename = {
   ['/etc/serial.conf'] = 'setserial',
   ['/etc/udev/cdsymlinks.conf'] = 'sh',
   ['.ash_history'] = 'sh',
+  ['.devscripts'] = 'sh',
+  ['devscripts.conf'] = 'sh',
   ['makepkg.conf'] = 'sh',
   ['.makepkg.conf'] = 'sh',
   ['user-dirs.dirs'] = 'sh',