fix: Repair warp speeds; refactor ETA function

[EttyKitty]

Summary by cubic

Fixes incorrect warp travel times and refactors the ETA calculation to be clearer and more reliable. Travel time now correctly accounts for warp lanes, warp capability, and storms.

• Bug Fixes

  • Apply lane bonus only when warp_able; off‑lane travel is 2x; on‑lane without warp uses normal speed.
  • Consistent storm penalty at the destination star.
  • Updated fleet selection and player fleet ETA displays to use the corrected calculation.

• Refactors

  • Replaced calculate_fleet_eta(xx, yy, xxx, yyy, fleet_speed, star1, star2, warp_able) with calculate_fleet_eta(self_x, self_y, target_x, target_y, fleet_speed, from_star, to_star, warp_able).
  • Updated calls in obj_fleet_select, obj_p_fleet (Alarm_4), and scr_player_fleet_functions.
  • Added {bool} return annotation to is_orbiting.

^{Written for commit f218bbd. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 4 files

Confidence score: 3/5

• In scripts/scr_fleet_functions/scr_fleet_functions.gml, the route-time logic appears to apply the connected-route doubling to non-warpable fleets, making lane-connected paths behave like no-lane travel; this can skew movement balance and AI/player travel decisions if merged as-is — separate the no-lane penalty from the warp-capable speed bonus before merging.

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Re-trigger cubic</sub>