patch 9.0.2097: No support for cypher files

Problem:  No support for cypher files
Solution: Add cypher filetype detection

Cypher query language support to work with (mostly) graph databases.

Already existing lsp support in Neovim's nvim-lspconfig:
https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#cypher_ls

closes: #13516

Signed-off-by: Gerrit Meier <meistermeier@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/filetype.vim

@@ -342,6 +342,9 @@ au BufNewFile,BufRead *.cc
 au BufNewFile,BufRead *.cpp
 	\ if exists("cynlib_syntax_for_cpp")|setf cynlib|else|setf cpp|endif
 
+" Cypher query language
+au BufNewFile,BufRead *.cypher			setf cypher
+
 " C++
 au BufNewFile,BufRead *.cxx,*.c++,*.hh,*.hxx,*.hpp,*.ipp,*.moc,*.tcc,*.inl setf cpp
 if has("fname_case")