feat: Add another way to create foldable blocs

As it's used by Work and removed from java language configuration

Author: CGNonofr

src/hacks.ts

@@ -6,8 +6,8 @@ import * as monaco from 'monaco-editor'
 //  custom block content
 // }
 */
-const CUSTOM_BLOCK_BEGIN_REGEX = '^\\s*(?:\\/\\/|#).*\\{'
-const CUSTOM_BLOCK_END_REGEX = '^\\s*(?:\\/\\/|#).*\\}'
+const CUSTOM_BLOCK_BEGIN_REGEX = '^\\s*(?:\\/\\/|#).*(?:\\{|#region)'
+const CUSTOM_BLOCK_END_REGEX = '^\\s*(?:\\/\\/|#).*(?:\\}|#endregion)'
 export function addCustomFoldingMarkers (configuration: monaco.extra.ILanguageConfiguration): monaco.extra.ILanguageConfiguration {
   const markers = configuration.folding?.markers
   return {