UH-60L mod support

Resolves #1964 but adding CTLD will require the use of Liberation plugins and thus are not included in this pull request.

- Implemented support for the UH-60L mod by =X51= Kinkkujuustovoileipa, Cubeboy, Jonas, JinxxDCS, Dorian, =X51= Parzival & =X51= Lawson.
- Because the standard DCS tankers will not fly below 160ish knots, the UH-60L mod team have included a modified version of the KC-130 tanker designed for refueling at speeds of 120-130kts.

resources/units/aircraft/KC130J.yaml

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+description:
+  The Lockheed Martin (previously Lockheed) KC-130 is a family of the extended-range
+  tanker version of the C-130 Hercules transport aircraft modified for aerial refueling.
+  This version of the KC-130 tanker is designed for refueling at speeds of 120-130kts,
+  enabling refueling of helicopters such as the UH-60L.
+introduced: 2004
+manufacturer: Lockheed Martin
+origin: USA
+price: 25
+role: Tanker
+max_range: 1000
+patrol:
+  # ~125 knots IAS
+  speed: 180
+  altitude: 22000
+variants:
+  KC-130J: {}

resources/units/aircraft/UH-60L.yaml

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+description:
+  The Sikorsky UH-60 Black Hawk is a four-blade, twin-engine, medium-lift utility helicopter manufactured by Sikorsky Aircraft.
+  The UH-60A entered service with the U.S. Army in 1979, to replace the Bell UH-1 Iroquois as the Army's tactical transport helicopter.
+  The UH-60L is an improved utility variant.
+introduced: 1989
+carrier_capable: true
+lha_capable: true
+manufacturer: Sikorsky
+origin: USA
+price: 4
+role: Transport
+variants:
+  UH-60L: {}