Add basic LSP support

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

modules/lang/python/config.el

@@ -46,6 +46,9 @@ called.")
     :for "for"
     :return "return" :yield "yield")
 
+  (when (featurep! +lsp)
+    (add-hook 'python-mode-hook #'+lsp|init))
+
   (define-key python-mode-map (kbd "DEL") nil) ; interferes with smartparens
   (sp-local-pair 'python-mode "'" nil
                  :unless '(sp-point-before-word-p
@@ -63,6 +66,7 @@ called.")
 
 
 (def-package! anaconda-mode
+  :unless (featurep! +lsp)
   :hook python-mode
   :init
   (setq anaconda-mode-installation-directory (concat doom-etc-dir "anaconda/")