build core, basic and go variants and add template

basic/nvim/lua/pack.lua

@@ -0,0 +1,9 @@
+local conf_path = 'plugconf/%s.lua'
+
+function pack(name)
+  vim.cmd('packadd! ' .. name)
+  name = name:gsub('^n?vim%-', ''):gsub('%..*$', '')
+  vim.cmd.runtime(conf_path:format(name))
+end
+
+return pack