2.105.0 will be released soon, dscanner/libdparse are behind, let's fix this!

[ryuukk_]

Hello,

2.105.0 is just around the corner, it will allow: `alias this = 
n;` https://dlang.org/changelog/2.105.0.html#dmd.alias-this-syntax

However tooling is not updated, so if someone use this syntax, 
it'll produce a false positive saying the code is wrong


I'm trying to implement this right now, but dscanner is working 
with git submodules and i am a git illiterate so this is 
challenging for me to test both serve-d/dscanner/libdparse in 
concert... (this should all be put in 1 repo imo.. but whatever..)

If you are good at git, and know these projects, please help!


https://github.com/dlang-community/D-Scanner

https://github.com/dlang-community/libdparse