Sprint 4: PC Builder (Part 1)

What's Changed

• feat: compatibility rules engine by @romulojr-dev in #55
• feat: count, capacity and power rules with a wattage estimate by @romulojr-dev in #56
• feat: builder page with saved state, summary and Add to build by @romulojr-dev in #57
• feat: slot part picker with compatible parts first by @romulojr-dev in #58

Full Changelog: v0.3.0...v0.4.0