lsp-metals was extracted out of lsp-emacs into a separate package. This
change adds that separate package to the scala module when the lsp
feature is selected.
Fixeshlissner/doom-emacs#3362
Still needs to be documented, but includes support for the following
languages:
+ C/C++/ObjC
+ Go
+ Java
+ Javascript
+ OCaml
+ PHP
+ Python
+ Ruby
+ Scala
+ Swift
+ HTML/CSS
Relevant to #460, #716, #1186