feat(icons): add briefcase-medical & briefcase-business

[karsa-mistmere]

Completes feathericons/feather#1180 and related to #119

What is the purpose of this pull request?

• New Icon

Description

Adds two new briefcase variants, briefcase-medical as requested in feathericons/feather#1180 and briefcase-business, which is a more portfolio-like variant.

The PR also pushes the existing briefcase icon 1px upwards for better vertical centering:

Icon use case

• briefcase-medical:
  • first aid, help, support
  • medical business
• briefcase-business
  • business
  • portfolio
  • documents

Alternative icon designs

Icon Design Checklist

Concept

• I have provided valid use cases for each icon.
• I have not added any a brand or logo icon.
• I have not used any hate symbols.
• I have not included any religious or political imagery.

Author, credits & license

• I've based them on the following Lucide icons: briefcase

Naming

• I've read and followed the naming conventions
• I've named icons by what they are rather than their use case.
• I've provided meta JSON files in icons/[iconName].json.

Design

• I've read and followed the icon design guidelines
• I've made sure that the icons look sharp on low DPI displays.
• I've made sure that the icons look consistent with the icon set in size, optical volume and density.
• I've made sure that the icons are visually centered.
• I've correctly optimized all icons to two points of precision.

Before Submitting

• I've read the Contribution Guidelines.
• I've checked if there was an existing PR that solves the same issue.

[github-actions]

Added or changed icons

Preview cohesion

Preview stroke widths

DPI Preview (24px)

Icon X-rays