Remove fontawesome dependency from example app

[szarbartosz]

Summary

I noticed that @fontawesome dependency is present in the repository but is used in 2 demo screens only - the size of unpacked dependencies are following:

• @fortawesome/fontawesome-svg-core: 397 kB
• @fortawesome/free-solid-svg-icons: 5.09 MB
• @fortawesome/react-native-fontawesome: 33.4 kB

I believe that plain text emojis (which are present on eg. examples list) could be used instead of fontawesome icons.

Test plan

Open Tab bar and Habits example from the example app

[kacperkapusciak]

if these icons aren't bundled to the production reanimated package (I believe they aren't) then this change doesn't impact anything

comparing: development hermes engine weights over 1 GB and it doesn't matter

why we use fontawesome in the first place? i have no idea but for years we never have any problems with it

[kacperkapusciak]

After consulting on DMs

Removing fontawesome dependency makes it easier to port Reanimated to some out-of-tree platforms on which SVGs aren't fully supported yet which is a valid usecase for removing it from the example app