vim-patch:9.0.0731: clang-tidy configuration files are not recognized (#20620)

Problem:    clang-tidy configuration files are not recognized.
Solution:   Recognize clang-tidy files as yaml. (closes vim/vim#11350)
af40f9af33

runtime/filetype.vim

@@ -370,6 +370,9 @@ au BufNewFile,BufRead *.ch			call dist#ft#FTchange()
 " ChordPro
 au BufNewFile,BufRead *.chopro,*.crd,*.cho,*.crdpro,*.chordpro	setf chordpro
 
+" Clang-tidy
+au BufNewFile,BufRead .clang-tidy		setf yaml
+
 " Clean
 au BufNewFile,BufRead *.dcl,*.icl		setf clean
 

runtime/lua/vim/filetype.lua

@@ -1666,6 +1666,7 @@ local filename = {
   fglrxrc = 'xml',
   ['/etc/blkid.tab'] = 'xml',
   ['/etc/blkid.tab.old'] = 'xml',
+  ['.clang-tidy'] = 'yaml',
   ['/etc/zprofile'] = 'zsh',
   ['.zlogin'] = 'zsh',
   ['.zlogout'] = 'zsh',

src/nvim/testdir/test_filetype.vim

@@ -641,7 +641,7 @@ let s:filename_checks = {
     \ 'xsd': ['file.xsd'],
     \ 'xslt': ['file.xsl', 'file.xslt'],
     \ 'yacc': ['file.yy', 'file.yxx', 'file.y++'],
-    \ 'yaml': ['file.yaml', 'file.yml'],
+    \ 'yaml': ['file.yaml', 'file.yml', '.clang-tidy'],
     \ 'yang': ['file.yang'],
     \ 'z8a': ['file.z8a'],
     \ 'zig': ['file.zig'],