tests/api: Add tests for "GET /airport/:id"
tests/api: Add tests for "GET /airport/:id"

RBE-Avionik/skylines,shadowoneau/skylines,shadowoneau/skylines,shadowoneau/skylines,skylines-project/skylines,Turbo87/skylines,skylines-project/skylines,shadowoneau/skylines,skylines-project/skylines,RBE-Avionik/skylines,skylines-project/skylines,Harry-R/skylines,RBE-Avionik/skylines,Turbo87/skylines,Harry-R/skylines,RBE-Avionik/skylines,Turbo87/skylines,Turbo87/skylines,Harry-R/skylines,Harry-R/skylines