Add base failure, Nod defense to gdi05b & gdi05c

[JovialFeline]

In 05b/05c, GDI now fails if the GDI base is destroyed before its discovery.

• If this happens, the location is revealed as a courtesy.

In 05b/05c, GDI can now draw Nod attackers from the GDI base by going after Nod's own base.

• This is skipped if the GDI base has been discovered.
• Extra simple to do on 05b because of the terrain.

Nod attack routes in 05b/05c are now more direct.

Like 05c, 05b now delays the appearance of GDI's harvester until the base is discovered.

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Some changes to GDI 05 prompted by a bug report from Zsombi. It's possible to skip recovering the GDI base and destroy Nod with only starting units. If Nod first destroys all the GDI structures, completing the "Find the GDI base" objective becomes impossible and the mission is locked.

Zsombi expected victory since Nod got wiped off the map. This seems at odds with at least the video briefing and how the original triggers are set up.

For the sake of fun, I've tried for a middle ground that happens to be possible in the original mission: losing the base before discovery still causes defeat but if the Nod base is attacked, their forces at the GDI base can get pulled back to defend.

Attack routes in 05b/05c have an added waypoint inside the GDI base to sidestep an issue. It's possible for the attack functions with Utils.Take to affect the same units and queue orders. The result is attackers that path toward one entrance of the GDI base, finish that attack route, circle back to the Nod base to begin another route, and then attack a different entrance.

2023-12-06_13-14-46.mp4

05a was left untouched because Nod is not scripted to attack until the base is discovered.

[RoosterDragon]

Changes look good to me. Player through both maps and no issues to note.

[PunkPun]

Merging in trust that any regressions will be quickly fixed

[PunkPun]

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