add extensions support icon in browsers list

[yukulele]

Is your feature request related to a problem? Please describe.
When choosing a browser, the possibility of using extensions is an important factor.
Currently in browser list, it's hard to tell at a glance which browsers support extensions.

Describe the solution you'd like
an extension support icon 🧩 should be added to the browser list with different colors:

• 🔴🧩 red: no support (example: chrome)
• 🟠🧩 orange: limited support (example: firefox)
• 🟢🧩 green: full support (example: kiwi)