Feat: Remove Requirement for Dotfile (#84)

This MR removes the requirement for a dotfile (the dotfile is now optional and will override the configuration provided via environment variables). The requirement for providing a project ID is also eliminated, by parsing the namespace and project name from the SSH or HTTPS remote, and then using that to query Gitlab for a matching project.

lua/gitlab/server.lua

@@ -12,8 +12,6 @@ M.start = function(callback)
   local parsed_port = nil
   local callback_called = false
   local command = state.settings.bin
-    .. " "
-    .. state.settings.project_id
     .. " "
     .. state.settings.gitlab_url
     .. " "
@@ -47,8 +45,6 @@ M.start = function(callback)
       if parsed_port ~= nil and not callback_called then
         callback()
         callback_called = true
-      elseif not callback_called then
-        u.notify("Failed to parse server port", vim.log.levels.ERROR)
       end
     end,
     on_stderr = function(_, errors)