vim-patch:9.1.0324: filetype: some json files are not recognized

Problem:  filetype: some json files are not recognized
Solution: Detect '.jscsrc' and '.vsconfig' as jsonc filetype
          (Wu, Zhenyu)

See:
- https://github.com/microsoft/PowerToys/blob/main/.vsconfig
- https://jscs-dev.github.io/

closes: vim/vim#14452

c59a8648b2

Co-authored-by: Wu, Zhenyu <wuzhenyu@ustc.edu>

runtime/lua/vim/filetype.lua

@@ -1437,10 +1437,12 @@ local filename = {
   ['.babelrc'] = 'jsonc',
   ['.eslintrc'] = 'jsonc',
   ['.hintrc'] = 'jsonc',
+  ['.jscsrc'] = 'jsonc',
   ['.jsfmtrc'] = 'jsonc',
   ['.jshintrc'] = 'jsonc',
   ['.luaurc'] = 'jsonc',
   ['.swrc'] = 'jsonc',
+  ['.vsconfig'] = 'jsonc',
   ['.justfile'] = 'just',
   Kconfig = 'kconfig',
   ['Kconfig.debug'] = 'kconfig',

test/old/testdir/test_filetype.vim

@@ -363,7 +363,7 @@ func s:GetFilenameChecks() abort
     \ 'jproperties': ['file.properties', 'file.properties_xx', 'file.properties_xx_xx', 'some.properties_xx_xx_file', 'org.eclipse.xyz.prefs'],
     \ 'json': ['file.json', 'file.jsonp', 'file.json-patch', 'file.geojson', 'file.webmanifest', 'Pipfile.lock', 'file.ipynb', 'file.jupyterlab-settings', '.prettierrc', '.firebaserc', '.stylelintrc', 'file.slnf', 'file.sublime-project', 'file.sublime-settings', 'file.sublime-workspace', 'file.bd', 'file.bda', 'file.xci'],
     \ 'json5': ['file.json5'],
-    \ 'jsonc': ['file.jsonc', '.babelrc', '.eslintrc', '.jsfmtrc', '.jshintrc', '.hintrc', '.swrc', 'jsconfig.json', 'tsconfig.json', 'tsconfig.test.json', 'tsconfig-test.json', '.luaurc'],
+    \ 'jsonc': ['file.jsonc', '.babelrc', '.eslintrc', '.jsfmtrc', '.jshintrc', '.jscsrc', '.vsconfig', '.hintrc', '.swrc', 'jsconfig.json', 'tsconfig.json', 'tsconfig.test.json', 'tsconfig-test.json', '.luaurc'],
     \ 'jsonl': ['file.jsonl'],
     \ 'jsonnet': ['file.jsonnet', 'file.libsonnet'],
     \ 'jsp': ['file.jsp'],