LONDON — The pints are being supped and the unkempt hairdos cut and styled as England embarked Saturday on its biggest lockdown-easing yet, one that many think has come too soon given still-high levels of coronavirus infections and deaths. In addition to the reopening of much of the English hospitality sector, including pubs and restaurants, for the first time in more than three months, couples can tie the knot once again and film buffs can catch a movie at the cinema. Museums and libraries also got the green light, but gyms, swimming pools and nail bars remain shut.