A federal bankruptcy judge on Wednesday gave conditional approval to a sweeping, potentially $10 billion plan submitted by OxyContin maker Purdue Pharma to settle a mountain of lawsuits over its role in the opioid crisis that has killed a half-million Americans over the past two decades.Under the settlement reached with creditors including individual victims and thousands of state and local governments, the Sackler family will give up ownership of the company and contribute $4.5 billion but will be freed from any future …