feat(nvim): add LSP signature

roles/neovim/files/lua/opdavies/lsp/init.lua

@@ -136,3 +136,4 @@ for server, config in pairs(servers) do
 end
 
 require "opdavies.lsp.null-ls"
+require "opdavies.lsp.signature"

roles/neovim/files/lua/opdavies/lsp/signature.lua

@@ -0,0 +1,6 @@
+local status_ok, lsp_signature = pcall(require, "lsp_signature")
+if not status_ok then
+  return
+end
+
+lsp_signature.setup {}

roles/neovim/files/lua/opdavies/plugins.lua

@@ -88,6 +88,7 @@ return packer.startup(function()
   use "jose-elias-alvarez/null-ls.nvim"
   use "neovim/nvim-lspconfig"
   use "nvim-lua/lsp-status.nvim"
+  use "ray-x/lsp_signature.nvim"
 
   -- Telescope
   use "nvim-telescope/telescope.nvim"