Add UAE to the Circumvention settings API

Reading the AC Team backlog, I found this analysis interesting and, then, I checked on OONI explorer how things are going in UAE. There are a lot of anomalies on OONI Circumvention charts (Tor direct connections): https://explorer.ooni.org/chart/circumvention?since=2022-10-16&until=2022-11-16&probe_cc=AE.

It's unclear if they are only blocking Dir Auths and built-in obfs4 bridges are working fine there. But, it looks like some of TB built-in bridges are working, but it needs more analysis: https://explorer.ooni.org/measurement/20221114T155834Z_tor_AE_5384_n1_yrXIidIvmfoETHYV

Maybe we should just add obfs4 bridges and Snowflake to the circumvention map API and evaluate again at the end of December.

What do you think, @meskio?

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