FEP-ef61: Portable Objects

[anotherdoesnm]

Add support for FEP-ef61
for creating server indepent fediverse applications
This FEP are depend on 8b32 which already available in Fedify

[erlend-sh]

Supported! I logged the same request for wafrn.

This would also make way for Nomadic Identity.

[outlaw-dame]

https://codeberg.org/fediverse/fep/src/branch/main/fep/8b32/fep-8b32.md