Workshop, a platform for sharing and finding important internal information, has raised a $3.5 million seed round. The round included a group of prominent Midwest venture funds and angel investors, including Ludlow Ventures, M25, and Linseed Capital. The startup also announced their founding team, which includes Dusty Davidson and Rick Knudtson (former founders of Flywheel) and Ben Stevinson and Derek Homann (former founders of Median).…