vim-patch:9.1.0291: filetype: libreoffice config files are not recognized

Problem:  filetype: libreoffice config files are not recognized
Solution: Detect Libreoffice config fils as xml/dosini
          (Wu, Zhenyu)

closes: vim/vim#14453

73c89bcf79

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

runtime/lua/vim/filetype.lua

@@ -1167,6 +1167,10 @@ local extension = {
   xpfm = 'xml',
   spfm = 'xml',
   bxml = 'xml',
+  xcu = 'xml',
+  xlb = 'xml',
+  xlc = 'xml',
+  xba = 'xml',
   xpm = detect_line1('XPM2', 'xpm2', 'xpm'),
   xpm2 = 'xpm2',
   xqy = 'xquery',
@@ -1326,6 +1330,8 @@ local filename = {
   ['setup.cfg'] = 'dosini',
   ['pudb.cfg'] = 'dosini',
   ['.coveragerc'] = 'dosini',
+  ['psprint.conf'] = 'dosini',
+  sofficerc = 'dosini',
   ['/etc/pacman.conf'] = 'confini',
   ['mpv.conf'] = 'confini',
   dune = 'dune',