Voryxia Vehicle Sound Fix

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Several vehicle mods reference vanilla audio resources that Bohemia removed in a
later game update. When an audio signal is missing, the entire .acp fails to
compile - so the sound goes completely silent, not just the layer the signal drove.

Restores:
- Engine sound on the M1A1, all M1A2 variants, and the JLTV
- Interior engine layer on the M1A1 / M1A2
- Track sounds and cabin rattle on the M1A1, M1A2, M2A2, M2A3, M2A2 BUSK, T-72A, T-72B
- Damper and suspension sounds on the M1A1, M1A2, M2A2, M2A3, M2A2 BUSK, T-72A, T-72B, K17
- Damper sounds on the MRZR and the JLTV
- Wind loop on the parked IL-76

Adds 10 missing audio signals, 2 damper audio projects and 6 placeholder samples,
all under their original GUIDs. It overrides nothing - it only fills in resources
that no longer exist anywhere - so load order does not matter, and the only
dependency is Arma Reforger itself.

Note: the six UAZ469 grass debris samples are silent placeholders; the wav files
themselves are gone from vanilla and cannot be recreated.

Credits: the two damper audio projects are taken from Worst Case Scenario's
Joint Light Tactical Vehicle (APL-SA).