Wesley HodgesGreensky Bluegrass have announced the initial artist lineup for their inaugural Camp Greensky festival, and the billing includes Wilco frontman Jeff Tweedy, Phish bassist Mike Gordon and more.Also included in the lineup are fellow bluegrass outfits Trampled By Turtles, Billy Strings and Fruition, plus Rayland Baxter, Joshua Davis and Cris Jacobs Band, with more artists to be…