[SAoC2022] Replace libdparse with dmd-as-a-library in D-Scanner

[Per Nordlöw]

On Monday, 14 November 2022 at 14:35:46 UTC, Lucian Danescu wrote:
> Hello!
>
> Since the last update I implemented the following visitors:
> - 
> [length_subtraction](https://github.com/Dlang-UPB/D-scanner/pull/42)
> - 
> [constructor_check](https://github.com/Dlang-UPB/D-scanner/pull/43)
> - 
> [explicitly_annotated_unittest](https://github.com/Dlang-UPB/D-scanner/pull/44)
>
> [...]

Awesome work. This is really needed.