vim-patch:9.1.0744: filetype: notmuch configs are not recognised (#30535)

Problem:  filetype: notmuch configs are not recognised
Solution: Detect more notmuch profile configuration files
          as dosini filetype (Julio B)

Reference:
https://notmuchmail.org/doc/latest/man1/notmuch-config.html#configuration

closes: vim/vim#15744

1a2870b57a

Co-authored-by: Julio B <julio.bacel@gmail.com>

runtime/lua/vim/filetype.lua

@@ -2109,6 +2109,8 @@ local pattern = {
     ['/bpython/config$'] = 'dosini',
     ['/flatpak/repo/config$'] = 'dosini',
     ['/mypy/config$'] = 'dosini',
+    ['^${HOME}/%.config/notmuch/.*/config$'] = 'dosini',
+    ['^${XDG_CONFIG_HOME}/notmuch/.*/config$'] = 'dosini',
     ['^${XDG_CONFIG_HOME}/git/config$'] = 'gitconfig',
     ['%.git/config%.worktree$'] = 'gitconfig',
     ['%.git/config$'] = 'gitconfig',
@@ -2259,6 +2261,7 @@ local pattern = {
   ['^%.'] = {
     ['^%.cshrc'] = detect.csh,
     ['^%.login'] = detect.csh,
+    ['^%.notmuch%-config%.'] = 'dosini',
     ['^%.gitsendemail%.msg%.......$'] = 'gitsendemail',
     ['^%.kshrc'] = detect.ksh,
     ['^%.article%.%d+$'] = 'mail',