All signs point to the Los Angeles Chargers looking at a weapon or two for Justin Herbert during the upcoming NFL draft.  One of the signs was the Chargers’ sheer unwillingness to do so during NFL free agency. They added to the offensive line with Tyler Biadasz and Cole Strange. But at tight end, Charlie Kolar is more of a blocker. Joe Hortiz and the front office mostly left wideout untouched.  Odd, considering Mike McDaniel is in town as the hyped new offensive coordinator and one would think he wants to get some of his own guys in the door to serve as weapons around Herbert.  Of course, the caveat here is the upcoming NFL draft.…