By all accounts, Charn Kang is a good guy. "A good, tough guy," according to Shannon Harris, shift leader at the Papa Murphy's.On Tuesday, Kang will once again be donating to a local cause - this time to Partners in English Language Learning (PiELL), a local nonprofit that trains volunteer tutors and connects them with people working to learn English.Kang moved to the U.S. in 1984 at 11 years old."I didn't speak a word of English," he saidYet he went on to become an electrical engineer with a successful career spanning 13 years. The work involved a great deal of …