vim-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: vim/vim#13516

8f0fe20ff1

Co-authored-by: Gerrit Meier <meistermeier@gmail.com>

runtime/lua/vim/filetype.lua

@@ -333,6 +333,7 @@ local extension = {
   pld = 'cupl',
   si = 'cuplsim',
   cyn = 'cynpp',
+  cypher = 'cypher',
   dart = 'dart',
   drt = 'dart',
   ds = 'datascript',