Case: Add CAD and 3D printing files for the case.

Merge pull request #1 from jakkra/2.0.3_Dev

- Streamline documentation and production files

- Add blue color to PCB settings

- Change PCB thickness to 1 mm

Add release date, finalize production files for the release

Merge branch '2.0.3_Dev' of github.com:jakkra/ZSWatch-HW into 2.0.3_Dev

PCB and documentation update

Add magnet contact instead of pin header for the dock connector, create new manufacturing data and sync them with PCBWay BOM, update README

Restructure project, add hardware release 2.0.3