vim-patch:9.1.1026: filetype: swc configuration files are not recognized

Problem:  filetype: swc configuration files are not recognized
Solution: detect .swcrc files as json filetype (Marces Engel)

References:
https://swc.rs/docs/configuration/swcrc

closes: vim/vim#16462

3a738fccaa

Co-authored-by: Marces Engel <marces@facemurphy.com>

runtime/lua/vim/filetype.lua

@@ -1636,6 +1636,7 @@ local filename = {
   ['.lintstagedrc'] = 'json',
   ['deno.lock'] = 'json',
   ['flake.lock'] = 'json',
+  ['.swcrc'] = 'json',
   ['.babelrc'] = 'jsonc',
   ['.eslintrc'] = 'jsonc',
   ['.hintrc'] = 'jsonc',