the delimiter describes the language to use for the injection content
```cpp
auto python_code = R"python(
import os
if __name__ == '__main__':
print(os.name)
)python";
```
* Comment: use `@combined` to create just one tree per buffer
There is no need to create a tree per line/block for comments.
Should fix https://github.com/nvim-treesitter/nvim-treesitter/issues/1251
* Add injections for scss
* Fix jsonc
* Combine jsdoc
