emacs: Add snippets and lsp for go

.emacs.d/init.el

@@ -27,6 +27,30 @@
 (use-package go-mode
   :mode "\\.go\\'")
 
+(use-package lsp-mode
+  :commands (lsp lsp-deferred)
+  :hook (go-mode . lsp-deferred))
+
+(defun lsp-go-install-save-hooks ()
+  (add-hook 'before-save-hook #'lsp-format-buffer t t)
+  (add-hook 'before-save-hook #'lsp-organize-imports t t))
+(add-hook 'go-mode-hook #'lsp-go-install-save-hooks)
+
+(use-package lsp-ui
+  :commands lsp-ui-mode)
+
+(use-package company
+  :config
+  (setq company-idle-delay 0)
+  (setq company-minimum-prefix-length 1))
+
+(use-package company-lsp
+  :commands company-lsp)
+
+(use-package yasnippet
+  :commands yas-minor-mode
+  :hook (go-mode . yas-minor-mode))
+
 ;; Lua
 (use-package lua-mode
   :mode "\\.lua\\'")
@@ -62,7 +86,7 @@
 
 (set-face-attribute 'default nil
 		    :family "Input Mono Narrow"
-		    :height 200)
+		    :height 140)
 
 (setq inhibit-startup-screen t)