Add `scale` (`size: s`) and `code` (`size: s`) icons to codebase

[clarsen-czi]

There are two new icons that need to be added to the codebase and icon bank:

• Adding size: s of the existing code icon which currently comes in size: l
  • SVG saved here: https://drive.google.com/open?id=16FoskYt-QM-Bxfmqozfm7MK5wBVgaAdD&usp=drive_fs
• Adding a new scale icon in size: s
  • SVG saved here: https://drive.google.com/open?id=16EGlz35cCRbR53j32XApE8Wd-3mBMQbH&usp=drive_fs