Improved 3D tracking and correction

What’s New 🚨

New exercises
Two new exercises added to the library - Step Ups and Floor Press.

Improvements ✨

• Overhauled the tracking algorithm. Metric is now able to record sets reliably from a wider range of phone positions, including placing the phone lower down relative to the barbell.
• X & Z axis correction. Metric now features X-axis and Z-axis correction so mean velocity is more accurate, and aligns with other velocity tracking technologies that also offer X-axis correction.

Fixes 🐛

• Touch ups and bug squashing. As usual stability has been tweaked, bugs and crashes should be less common as a result.

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