nvim: switch to cmp's signature plugin

.config/nvim/lua/plugins/cmp.lua

@@ -22,6 +22,7 @@ cmp.setup({
 	},
 	sources = {
 		{ name = "nvim_lsp" },
+		{ name = "nvim_lsp_signature_help" },
 		{ name = "path" },
 		{ name = "buffer", keyword_length = 5 },
 		{ name = "vsnip" },

.config/nvim/lua/plugins/lspsignature.lua

@@ -1,8 +0,0 @@
-cfg = {
-	hint_prefix = " ",
-	handler_opts = {
-		border = "none",
-	},
-}
-
-require("lsp_signature").setup(cfg)

.config/nvim/lua/plugins/vimtex.lua

@@ -1,5 +1,7 @@
 -- ignore certain errors
-vim.g.vimtex_quickfix_ignore_filters = { "Underfull", "Overfull", "babel" }
+-- vim.g.vimtex_quickfix_ignore_filters = { "Underfull", "Overfull", "babel" }
 
 -- use zathura as the pdf viewer
 vim.g.vimtex_view_general_viewer = "zathura"
+
+vim.g.vimtex_compiler_latexmk_engines = { _ = "-lualatex" }