Provide `if`, `for`, `while`, etc. as snippets instead of plain keywords

[notfirefox]

Description

Other language servers, e.g. clangd, provide snippets for control structures such as if, for, while, etc. Accepting a suggestion for one of those keywords then will insert the following text:

if expression {
    |
}

The cursor will first be on expression, allowing the user to enter the expression that controls the if statement. Pressing the tab key will move the cursor to the next location, i.e. | - where the user can write the code that shall be executed when the expression is true.