Add rust search engines to firefox

Change-Id: I64e5cd6745f133b5e5ad36bd15d765415e08778c
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/511
Tested-by: Skyler Grey <minion@clicks.codes>
Reviewed-by: Samuel Shuert <coded@clicks.codes>
2 files changed