Allow extensions to change { ... } completion to { ... };

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> For C-like languages: So the suggestion is to auto place semicolon after class, struct, enum and union definition. Since we have already autocompletion for the brackets, when struct A {| completes to struct A{ | } why not to put a semicolon after brackets to complete class, struct etc. definition like struct A{ | };. It really bugs me to put semicolon every time at the end of definition. To Reproduce Type struct A {| Auto complete will do its job: struct A{ | } Observe error squiggles - missing semicolon after struct definition! Put semicolon by hand Expected behavior Autocomplete with semicolon at the end of class, struct, enum and union definition. Now as I know there is no way for C/C++ extension to modify this. Extension needs to run its lexer to check if the tokens before the { belong to the start of a struct/class/etc. definition to determine if the "completion" for { should be } or };. Visual Studio implements this scenario correctly.