feat(button): Add Custom Icons for Custom Buttons (#62)

[Choubakawa]

Proposed Changes

• You can add FontAwesome Icon to Custom Button by adding CUSTOM_BUTTON_ICON in the ENV file:
  CUSTOM_BUTTON_ICON=fas link,fab youtube
• Icons are not required, you can omit an icon in the list or not using the variable at all.
• This closes Custom Icons for Custom Buttons #62

all icons

only one

without icon

Checklist

• Tested locally
• Ran yarn ci to test my code
• Did not add any unnecessary changes
• All my changes appear after other changes in each file
• Included a screenshot (if adding a new button)
• 🚀

[timothystewart6]

Thank you for this! I made a few comments but nothing blocking!

[timothystewart6]

I think this can be hoisted outside of the function? I don' think it matters though since app shouldn't re-render

[timothystewart6]

Could this be

                icon={icons && icons[i]?.trim()}

That way you don't have to have the if statement and null check above and then assign to []? Not a big deal, just a recommendation.

[timothystewart6]

I am totally fine with merging too, just wanted to throw that out there. LMK!

[Choubakawa]

I've updated the PR with your recommendations 😃

[timothystewart6]

thank you!