[ok] Allow creation of short flight between Tinian, Rota, Saipan and Guam

[qunow]

In real life,
- The only regularly scheduled flights to Tinian are made from Saipan, which is currently impossible to schedule in game due to the short distance between the two airport
- The only regularly scheduled flight out of Rota International Airport to point outside Northern Mariana is to Guam, which is currently impossible to schedule in game due to the short distance between the two airport
Please exempt those airports from the restriction in order to allow those flights to be scheduled.

[qunow]

Also request exemption for PSE and VQS in Puerto Rico as VQS is an domestic airport with all its airlinks to points within Puerto Rico which currently most of those links are not allowed to establish in AWS due to the distance, and PSE used to have flights to San Juan on numerous carrier offered almost consecutively from 1970s to 2011 with only brief breaks in between and also seems to be an important part of the airport's traffic, and the link is again cannot be established in game.

[Sami]

Can you list the desired airport pairs? (4-letter codes)

[qunow]

Can you list the desired airport pairs? (4-letter codes)

PGSN-PGWT
PGUM-PGRO
TJVQ-TJSJ
TJVQ-TJIG
TJPS-TJSJ
TJVQ-TIST
TJVQ-TISX(TIST and TISX are US Virgin Island airports that have regular flight to TJVQ in real life

[RNL]

Can you list the desired airport pairs? (4-letter codes)

Can the same be done for the Netherlands Antilles?
TNCB-TNCC