A colorful former tabloid publisher took the witness stand Tuesday at Donald Trump’s “hush money” trial and described how he suppressed negative stories about the real estate tycoon, a practice known as “catch and kill.” Trump, 77, the first former US president to face criminal charges, is accused of falsifying business records to buy the silence of porn star Stormy Daniels over a 2006 sexual encounter that could have damaged his 2016 presidential bid. Prosecutors allege that Trump engaged in “election fraud” by having his then personal lawyer Michael Cohen make a $130,000 payment to the adult…