There is No BRUNEI in the Country List

[adiatmad]

Is your feature request related to a problem? Please describe.
I'm looking for a Tasking Manager project in Brunei Darussalam but it turns out that the country name is not on the list.

Describe the solution you'd like
Please add Brunei Darussalam to the country list

Describe alternatives you've considered
I have no idea as an alternative

Additional context
Before filing this request, I searched the topic with the "Brunei" keyword here in GitHub but get nothing. Also I'm checking OSMCha there is active OSM mapping activity in Brunei.