In Firefox for Android 1.120 they seem to have made some improvements for the upcoming extended addon support and have added a link to find more addons via addons.mozilla.org/en-GB/android.

Let's hope lots of apps are available soon, including including Firefox Translations.

"In anticipation of opening up the Firefox for Android extension ecosystem later this year, dozens of new mobile extensions will surface during the 120 release cycle as we continue guardrail testing."