vim-patch:9.2.0046: filetype: neon files are not recoginzed (#38049)

Problem:  filetype: neon files are not recoginzed
Solution: Detect *.neon files as neon filetype
          (przepompownia)

Reference:
https://doc.nette.org/en/neon/format
https://github.com/fpob/nette.vim

closes: vim/vim#19496

ddd90672f2

Co-authored-by: przepompownia <przepompownia@users.noreply.github.com>

runtime/lua/vim/filetype.lua

@@ -849,6 +849,7 @@ local extension = {
   NSP = 'natural',
   NSS = 'natural',
   ncf = 'ncf',
+  neon = 'neon',
   axs = 'netlinx',
   axi = 'netlinx',
   nginx = 'nginx',