The Garmin Vivosmart3 aims to make your weightlifting workouts even smarter.Image: lili sams/mashable Garmin is looking to solve one of the biggest issues facing wearables with its latest release, the vvosmart 3: How can an activity tracker be useful in the weight room? Just about every fitness tracker I’ve ever worn is more focused on counting steps and logging runs than anything else. I run, but as a former athlete,…