Improvements to autocompletion with eglot.

Add a function to toggle autocompletion and improve the
competion-at-point-functions when eglot is rinning using cape-capf-super.

configs/init-lsp.el

@@ -88,7 +88,7 @@
   :hook (prog-mode . (lambda ()
                        (unless (derived-mode-p 'makefile-mode)
                          (flymake-mode))))
-  :config
+  :init
   (remove-hook 'flymake-diagnostic-functions 'flymake-proc-legacy-flymake)
   )