Student project brainstorm

These project ideas are still being fleshed out and investigated to see if they're reasonable.

Needs more information/refining:

• https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas
• graphical diff viewer for web specifications
• webanimation
• make AreWeSlimYet run with Servo

Investigate to determine viability:

• convert more network code to use the fetch stack
• support more webdriver APIs
• <select>???
• missing WebGL APIs
• implement strict referrer policies
• more network/performance devtools support
• pending/current requests for image loading
• <input>/<textarea> maxlength
• html form validation
• support cookie security extensions
• off-main-thread HTML parsing
• image maps
• basic SVG subset DOM & layout (using webrender stubs that draw rectangles)
  • https://github.com/servo/servo/issues/12974 and https://github.com/servo/servo/issues/12975