Turn package goals from Google doc to project board?

[pllim]

Some goals were discussed at Astropy Coordination Meeting 2025 and documented at https://docs.google.com/document/d/1FnUg5I0Xx3pszwz0bZwQiP3wG3Z5FYvc12xV5hDIYoY/edit?tab=t.0#heading=h.t4vp54mrt73c . Perhaps they could be better tracked in https://github.com/astropy/specreduce/projects instead?