By Jenny Peters Masks are starting to come off (at long last), and so far, we’re looking at the best live-music season in S.F. in recent memory. (Fact: We can no longer remember anything before March 2020.) Herein, we’ve compiled an eclectic bunch of shows — and a couple of festivals, too — for the months to come. Whether you want the stadium experience or something more intimate, these are the can’t-miss shows of the spring. Note that some indoor venues are still requiring masks and proof of COVID-19 vaccination for entry. Double check before you go. Because as he gets older, he’s found a sli…