[neovim] Use conform plugin for auto formatting

.config/nvim/lua/plugins/lsp/conform.lua

@@ -0,0 +1,26 @@
+require("conform").setup({
+	formatters_by_ft = {
+		go = { "goimports", "gofumpt" },
+		javascript = { "prettier" },
+		json = { "prettier" },
+		lua = { "stylua" },
+		markdown = { "prettier" },
+		python = { "isort", "black" },
+		typescript = { "prettier" },
+		yaml = { "prettier" },
+	},
+	formatters = {
+		{
+			command = "black",
+			args = { "--line-length", "100" },
+		},
+	},
+	format_on_save = function(bufnr)
+		local filetypes = { "go", "typescript", "lua" }
+		if not vim.tbl_contains(filetypes, vim.bo[bufnr].filetype) then
+			return
+		end
+
+		return { timeout_ms = 500, lsp_fallback = false }
+	end,
+})